Samsung BN41-01800 eMMC file with
WhatsApp +923139292880
How to know it is from Main Board or T-Con when some problems happen
1. No Picture : Backlight is on, but there is no picture and LED indicator in front of TV is blinking.
- Check the LVDS Cable connection. If still problems, change the T-Con Board and then Main Board step by step.
2. Picture distortion : Enter the service mode => Choose ‘SVC’ => Check the ‘internal pattern.’
Enter ‘Service Mode.
3. Choose ‘SVC.’
4. Choose ‘Test pattern.’
5. Select the each pattern and then check all pattern is OK or not.
How to enter service mode to Samsung Televisions
All Files
SAMSUNG LED TV SOFTWARE
PAKISTANI CUSTOMERS CAN USE QR QUICK ID CODE
Contact My Whatsapp
SAMSUNG LED TV FIRMWARE
SAMSUNG UA50F6400AR
SAMSUNG LED TV FIRMWARE
UA40D5500 NAND FLASH K9GAG08U0EOK
PAKISTANI CUSTOMERS CAN USE QR QUICK ID CODE
FOR PAKISTANI BUYERS YOU CAN BUY WITH ANY ONLINE PAYMENT
SYSTEM JUST SCAN QR CODE AND SEND PAKISTANI AMOUNT
PER SOFTWARE PRICE IS 1000 PKR
FOR MORE DETAILS CALL US 03139292880 OR WHATSSAPP US ANY TIME
Contact My Whatsapp
EACH SOFTWARE COST 1000 EACH
UE40D5700RS-BN41-01660B NAND FLASH
CHINA MODEL SAMSUNG LOGO REMOTE SCREEN SIZE 50" 55" MAIN BOARD T.MS608.P82 FIRMWARE
CHINA MODEL SAMSUNG LOGO REMOTE SCREEN SIZE 50" 55" MAIN BOARD T.MS608.P82 FIRMWARE
CHINA MODELSAMSUNG LOGO REMOTE SCREEN 50" 55" MAIN BOARD T.MS608.P82 FIRMWARE
SAMSUNG UA50F6400AR
UA40D5500 NAND FLASH K9GAG08U0EOK
SAMSUNG LED TV FIRMWARE
SAMSUNG UA40J500AK File
SAMSUNG LED TV FIRMWARE
UA46F5000AM BN41-01455
SAMSUNG LED TV FIRMWARE
SAMSUNG UE40F6100AK
SAMSUNG LED TV
SAMSUNG UA48H5100AR
For More Information About NAND Flash Software Please
NAND FILE LIST
UE55J6100AW
UE48H5003aw
UE48H5003
UE40F6100AK
UE39EH5003WX
UE32j4000aw
UA40N5000
D5500 D5700
UE42F5000AW-
UA42f5000
40F5500 50F5500 AR
SOFTWARE COST 1000 PKR EACH
USE QUICK PAY QR CODE
TP.MS338.PB801
TP.MS338.PB802
TP.MS338.PB803
TP.MS338.PB818
TP.MS338.PC821
TP.MS358.PB801
TP.MS358.PB818
CV628H-B42
CV338H-T42
CV338H-T50
CV338H-A32
CV338H-A42
CV338H-A50
TP.RT2982.PB801
TP.MS608.P81
TP.M608.P82
TP.MS608.P83
AND MORE FIRMWARE ARE INCULDING
FOR PAKISTANI BUYERS YOU CAN BUY WITH ANY ONLINE PAYMENT
SYSTEM JUST SCAN QR CODE AND SEND PAKISTANI AMOUNT
PER SOFTWARE PRICE IS 25000 PKR FULL PACKAGE
FOR MORE DETAILS CALL US 03139292880 OR WHATSSAPP US ANY TIME
💯 percent working and tested Softwares in Package Deal availableBuy Now with PayPal link or contact me at
Email us lcdledebooks@gmail.comWhatsApp +923139292880
FOR PAKISTANI BUYERS YOU CAN BUY WITH ANY ONLINE PAYMENT
SYSTEM JUST SCAN QR CODE AND SEND PAKISTANI AMOUNT
PER SOFTWARE PRICE IS 1500 PKR
FOR MORE DETAILS CALL US 03139292880 OR WHATSSAPP US ANY TIME
Samsung UA23H4003 LED TV - How to check the fault symptom, firmware upgrade, T-Con board fault symptoms
T’Con board check, software update, troubleshooting – Samsung LED TV UA23H4003AR
General troubleshooting
Check List for Initial operation
> AC Power Cord connected to the TV and the wall receptacle.
> Standby Power/IR Indicator LED is turned On.
> If Power/IR Indicator is not on check 14P power cable is connected and for correct Standby Voltage from SMPS to Main. Also check Jog Function Cable.
> Power turned On with Jog Function or Remote.
> Power on command from main Board to SMPS.
> Power/IR Indicator Flashes.
> Panel Back Lights are turned On.
- If no Back-lights, unplug AC Power Cord, unplug 14 pin connector to SMPS, plug in AC Power Cord, Back light should come on. Check Main Board operation for error.
> Power/IR Indicator goes off.
> Picture or banner is displayed.
* If nothing is displayed , check the LVDS cable.
> Standby Power/IR Indicator LED is turned On.
> If Power/IR Indicator is not on check 14P power cable is connected and for correct Standby Voltage from SMPS to Main. Also check Jog Function Cable.
> Power turned On with Jog Function or Remote.
> Power on command from main Board to SMPS.
> Power/IR Indicator Flashes.
> Panel Back Lights are turned On.
- If no Back-lights, unplug AC Power Cord, unplug 14 pin connector to SMPS, plug in AC Power Cord, Back light should come on. Check Main Board operation for error.
> Power/IR Indicator goes off.
> Picture or banner is displayed.
* If nothing is displayed , check the LVDS cable.
1. No Picture : Backlight is on, but there is no picture and LED indicator in front of TV is blinking.
- Check the LVDS Cable connection. If still problems, change the T-Con Board and then Main Board step by step.
2. Picture distortion : Enter the service mode => Choose ‘SVC’ => Check the ‘internal pattern.’
Enter ‘Service Mode.
3. Choose ‘SVC.’
4. Choose ‘Test pattern.’
5. Select the each pattern and then check all pattern is OK or not.
How to Check Fault Symptom -
* The LEDs on The front panel do not work when connecting The power cord.
* The SMPS relay does not work when connecting The power cord.
* The units appears to be dead.
* The SMPS relay does not work when connecting The power cord.
* The units appears to be dead.
Check if the IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Main Board.
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Main Board.
If you replace the main board with new one, change the factory option as well.
The options you must change are "Type"
The options you must change are "Type"
Software Upgrade
Software Upgrade can be performed by downloading the. latest frmware from samsung.com to a USB memory device.
• Current Version - The software already installed in the TV.
Software is represented as ‘Year/Month/Day_Version’.
How to Check the Software Version
„ Use the Main Menu
1. Click the "MENU" key in remote controller.
2. Select "Support" menu.
3. Locate the menu cursor "Software Upgrade" menu.
4. Click the "INFO" key.
Check the Main SW and Micom version.
You can check the software version using the factory mode too.
How to Upgade Software and Micom
Insert a USB drive containing the frmware upgrade downloaded from samsung.com into the TV. Please be careful not to disconnect the power or remove the USB drive while upgrades are being applied. The TV will turn off and turn on automatically after completing the frmware upgrade. Please check the frmware version after the upgrades are complete (the new version will have a higher number than the older version). When software is upgraded, video and audio settings you have made will return to their default (factory) settings. We recommend you write down your settings before beginning frmware update. After update is completed, restore your previous settings.
Insert a USB drive containing the frmware upgrade downloaded from samsung.com into the TV. Please be careful not to disconnect the power or remove the USB drive while upgrades are being applied. The TV will turn off and turn on automatically after completing the frmware upgrade. Please check the frmware version after the upgrades are complete (the new version will have a higher number than the older version). When software is upgraded, video and audio settings you have made will return to their default (factory) settings. We recommend you write down your settings before beginning frmware update. After update is completed, restore your previous settings.
Main Software Upgrade
1. Save the firmware folder to the root directory of a USB drive.
- Connect the USB.
2. Click the "MENU" key in Remote Controller.
3. Select "Support" menu. Select "Software Upgrade"
4. Click the "ENTER" key.
5. Click the "ENTER" key.
- Wait for upgrade complete.
- Check the Software Version.
Universal remote control codes to check with Samsung Televisions
0030 0049 0050 0066 0076 0101 0102 0119 0143 0152 0154 0166 0181 0195 0209 0217 0240 0307 0318 0365 0379 0414 0421 0488 0492 0601 0624 0637 0642 0827
All Files
Some TV Repair Notes: Tips and Tricks
Send me more Tips at imran_usa9@yahoo.com Thanks.
Hitachi TV Model: C2133TN (Nokia Stereo Plus) Chassis)
Very strong red content in the picture, sometimes the fault would clear with the strong red content fading until the correct greyscale was achieved
After much searching around i found the problem. There was a very small crack in the solder at RH23, this is a 2K4 surface mounted resistor located at the back of the tube base. Resoldering both sides of it cured the fault
Jvc TV Model: C-V14EKS/B/W (Onwa Chassis)
No Red
I was hoping the nvm had become corrupt and turned the red drive down but it was fine (To enter service mode press and hold vol up and vol down on the front panel and switch set on). Thankfully ZD405 (8V2) had expired (almost s/c) and removed the red
Sanyo Video Model: VHR776E
Dead
Check and replace PR512 (which is located towards the front right hand side)
Nikkai TV Model: BABY 10
No / int luminance
Poor contacts within the service switch
Sony TV (AE1 Chassis)
Field non linearity and short picture
Check / replace C531 (680uF, 25v), only slightly leaky, but a new one cured the fault
(Anonymous)
Philips Video Model: VR200
Unit not working, no FL display, ticking from PSU, head drum twitching
Electrolytic cap in PSU primary dried up (47uF, 50v)
(Anonymous)
Ideal/Slx TV Model: IDTV28T/IDTV28N/SLX28T2/28N (SM2 Chassis)
EW fault then set went dead (tripping), R711 on EW panel burnt
Check for dry joints on C620 (0.47uF, 250V), if dry replace then check Q602 and R618 (5K6). Also it is worth replacing Q580 anytime these sets come into the workshop with a BF422
(Leonard O’Brien)
Philips TV Model: 25PT4423 (L6.2 Chassis)
Stuck in standby, LED on, no HT
There may be no 5V to the microprocessor. Check R3509 and D6501. Replace R3509 with a 47k 1 Watt version (4822 053 10473). D6501 is type BZX79B5V6 (4822 130 34173). Check the +150 volt rail, 145V is too low
(Adel Ibrahim)
Rca TV Model: F27442 (CTC203AD5 Chassis)
No picture and sound, only a high pitch sound at switch on
Remove horizontal transistor and measure the resistance across any two pins. This value should be no less than 200ohms
(Roughtest)
Sony TV Model: KV-M2131U (BE1 Chassis)
Intermittent loss of syncronisation, both horizontal and vertical
The surface mounted power transistor on the teletext module requires resoldering. As there is evidence of scorching on the board the use of a more substantial component would be indicated perhaps with small heatsink
(Desmond Armstrong)
Samsung TV Model: CZ-21D83NS
Double picture or raster shifted
Check R414 (15K)
(Leonard)
Sony TV Model: KV2565
Dead with H. output short circuit, replacment blows short again
First check power area and repair dry joints then change all high voltage (PF value) capacitors in the horizontal section, this fixed the problem
(Imran Khan)
Mitsubishi TV Model: CT29B2STX
Various faults, dead, int. dead, poor frame, poor E-W
Change all electrolytic capacitors in the primary. Check all large electrolytics in the secondary (Ie bigger that 470uF), check all capacitors around IC950 (error amp.). Most capacitors you will find are leaking electrolyte. Might be a long job!!!
(Andy Doswell)
Sony Video Model: SLV-E800
No picture – screen is empty. Sound is ok
Check IC101 (BA7630F), if video signal comes to input (pin 1) but not present at output (pin 14) then replace this IC
Panasonic Video Model: NVHD650B
Fault code F80. works occassionally then doesnt work at all
There is a plastic piece on the motor which rotates when you press play or eject. A plastic cap fits on the spindle of the motor. This slips and doesnt grip the motor hence does not turn the drive gears. Just glue or replace the part (use loctite or super glue)
Philips TV (A10 Chassis)
Procedure to view customer service menu
Press Mute button on handset and any button on the TV, hold for a few seconds and menu will appear
Ferguson Video Model: FV105HV
Vcr dead, slow oscillation in p.s.u
Replace CP007 and CP008 close to the U4614B (Found this tip posted under Thomson VPH6601 which seems to have the same PSU)
Philips TV Model: 32PW6526-05 (SA10E Chassis)
Procedure to exit child lock with pin unknown / “locked” displayed on screen
Switch set on, press menu, select feature and press enter, select parental lock and press enter, then enter the code 0, 7, 1, 1 twice, the lock should now have cleared
Fermendi TV (F19 Chassis)
Procedure to invoke service mode
I have used this method and it works (supplied from the makers manual). With tv off, hold volume up button on tv, switch tv on and keep holding volume up button whilst pressing standby on remote (this must be done within 4 secs of switch on) at no time let volume go, press the yellow memory button on the handset to store
Toshiba TV Model: 28W23B (11AK37 Chassis)
Procedure to enter the service mode
Press the menu button then 4,7,2,5
Toshiba TV Model: 28W23B (11AK37 Chassis)
Picture displaced vertically, picture too high or low
This problem was cured by entering the service mode (menu then 4,7,2,5), then pressing the green fastext button to access geometry settings, selecting VP1 (vertical position) and adjusting as necessary
(Josh)
Sony TV (BE3D Chassis)
Procedure to enter the service mode
Press standby, i, 5, vol+ and tv (TT should now be displayed on the screen indicating the set is in the service mode)
(Josh)
Grundig TV (CUC7301/3 Chassis)
Power supply blown
This is often caused by a dry joint at C669 in the snubber network but also check the mains bridge rectifiers reservoir capacitor (47uF, 385v) for o/c, this item is not included in the ususal p.s.u repair kits and if not checked may result in a repeat blow up !
(Josh)
Sony TV Model: KV32TS20
Dead no click, Q502, Q601, Q602 shorted and blown fuse 602
Change all the above parts and also check R647, C512, C525, D607, D608, D609, D610, D622, VDR601 off primary side of T605. I`ve also found T605 bad too. ToughDog, Sony has bulletin out on this model
(Dwayne)
Sony TV Model: KV32TS20
Dead, good tip that I always use to save changed parts after replacing Q502, Q601, Q602 and blown fuse 602
I hook up 100 watt light bulb across fuse conection, then turn on tv, if light is very bright you still have a short. You saved the parts you changed, light should be dim and or blinks
(Dwayne)
Sony TV Model: KV27TS20
Intermittent video or snow
Resolder points A, B, C, D in tuner PCB, check cold solder on tuner shield 2-106-349-21
(Dwayne)
Ferguson Video Model: FV70B
Dim display
Check capacitor CP41 (220uF, 10v)
(Tom)
Panasonic Video Model: NV-L20
Poor playback and recording (looks like poor heads). Also shows as interference when playback appears
Check all electrolytics in secondary of switch mode power supply
(Ray)
Hitachi Video Model: VTM640
Low video level
Replace C1530 (47uF, 16v)
(Mt)
Jvc Video Model: HRJ235EK
Rubbing noise at start of full tape with horizontal picture judder
Excessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1
(E.T. Sandy)
Vestel TV (11AK19 Chassis)
Dead, ticks from switch on
Lop transistor dead short (BU2508AF) also check cap (12nf)
(Jonny)
Bush TV Model: WS6671 (11AK19 Chassis)
Very low width and bowed verticals,no ew correction. R626 o/c
C630 (390nF, 300v) faulty, located next to scan socket. This fault can also be caused by R629 (2R7 fusable) o/c. In my set C630 was dry-jointed but not faulty. Check generally for dry joints in the E/W and PSU areas. Note that R629 is a safety component
(Ian – Brighton)
Ferguson TV Model: TX98 (TX98 Chassis)
Intermittent tripping and switching to channel 1
Replace IC11 (TDA8138) 5/12 volt regulator ic
(Steve – Comet service)
Metz TV (11AK20 Chassis)
Switches to standby when hot
Check 4.00Mhz Xtal
(Wayne Haverson)
Sony TV Model: KV-M1400D (BE2A Chassis)
Retrace lines on picture, 60V on RGB transistors
C700 (100nF, 250V) seems to be leaky, but main problem is R723 which had gone from 27R to 1.2M, both on CRT board
(Anonymous)
Sony TV Model: KV-M1400D (BE-2A Chassis)
Dead, after replacing ic601 (STR54041) and Q601 (BC637) standby led blinks red twice, then blank, no HV
Replace fuse p801 (ICPN15 – 0.6A 50V, TO92)
(Anonymous)
Amstrad Video Model: DD8900
Bottom deck fails to load tape when pressing play/record. Sounds like loading motor is labouring when the pinch roller engages capstan shaft
The loading may complete if black pulley wheel on motor drive is ‘helped’. Look for stiff linkages before suspecting Motor
(Anonymous)
Tatung TV (F Series Chassis)
Starts up with black raster, then shuts down with LED blinking 4 times
This is the micro telling you that the auto grey-scaling procedure has failed. Change resistors R909, R913 & R922 (180k, 1%) on crt base PCB. You will probably find that all these have gone high
(Rob Hancock)
Matsui TV Model: 1408T
Locked out by incorrect pin number being used – and Dixon’s want £25 to do this!
1: Press standby on remote control to switch TV on
2: Press volume minus button on set front, while pressing 7 on remote control for at least two seconds, until ‘OK’ appears in the middle of the screen
Thanks to my son who has no TV training at all!!
(James)
Panasonic TV Model: TX28W3 (EURO 1 Chassis)
No raster, only heard a pip from speakers that went after a few seconds
C623 and R628 changed
(Nima)
Grundig TV Model: ST70-460 (CUC4635 Chassis)
Intermittent start up and tripping
Dry joint on R636, vertically mounted 4.7 ohm wirewound in sw mode circuit
(Peter Nutkins)
Nei TV Model: 2031TX
No Power
R802 open circuit. Unknown device (poss. Thermistor). Replaced with 15K, 2Watt
(Anonymous)
Sony TV Model: KV-2565MT (SCC-E64P Chassis)
Horizontal output transistor Q802 goes short repeatedly
C818 (1uF, 250v) had lost capacity, replaced C818 and Q802 and unit was ok
(Fiesta Service)
Sony TV Model: KVD-C21MF1 (SCC-K68A-A Chassis)
No sound and screen not appearing, B+ ok
No input on pin 5 of IC301 (MC44002P), R339 had failed, once replaced the unit was ok
(Fiesta Service)
Bush TV Model: 28ZKF
Set powers up but no sound and blank raster
RF10 o/c (33 ohm)
(Rod)
Panasonic TV Model: CT20G12V
Dead
This was found to be due to the STR58041 chip
(Anonymous)
Philips TV Model: GR2.4AA (GR2.4AA Chassis)
No picture, just black screen
Check R3414, an SMD chip on the CRT board. There could be invisible bad solder joints
(Kalle Birgersson – Sweden)
Panasonic Video Model: NVJ40
Poor picture, may clear as unit warms up
Check C27 in the power supply secondary
(Anonymous)
Philips TV Model: TX2112 (U5N Chassis)
Sound mutes for too long when changing stations (up to 30 secs)
The MAB8441-T005 was faulty (no longer available)
(Anonymous)
Thorn Video Model: VR414LVA
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
(Col)
Goldstar Video Model: P13I
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
(Col)
Goldstar Video Model: P13I
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
(Col)
Thorn Video Model: VR414LVA
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
(Col)
Jvc Video Model: HR-S4700EK
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
(Thunderdunc)
Firstline TV Model: 1433GR
Chopper secondary voltage (115V) was way too high (around 220V)
C615, Q605, Q606 and R308 had all died, The value of C607 (47uF) was out of range. Note: This set is equivalent to the Princess GT-1412
(Armando Valente)
Sony TV Model: KV-HF14M80 (BG-3S SSC-U21F Chassis)
Dead in standby mode, no primary voltages, led orange
Change uMICOM CXP86449-627S
(Brij)
Thomson TV (ICC17 Chassis)
Picture lacking in contrast and brightness
The symptoms suggested a beam limiter fault, replacing transistor TL02 (BF422) which was found to be leaky produced excellent pictures
(Kind Regards – LB)
Philips TV (L6.2 Chassis)
Power supply will not start up
Resistor 3506 (0.33 Ohms, 1w fusible) had failed, a replacement brought the set to life
(Kind Regards – LB)
Schneider TV Model: TV9
Line output transistor short circuit
Replacement did not clear the fault and the protection circuit was operating. C307 (0.047µF, 200V) was found to be o/c, when removed it had a bubble on the side, it’s part of a potential divider network (C306 & C307 in series, centre of which goes to the protect circuit), it is hard to get to being right by the line output transistor
(Kind Regards – LB)
Beko TV Model: 14.2
The +Ub voltage (+140V) was not present, fault in switching power supply
Transistor T601 (SK2545) had failed, replace/check resistor R602 (1Meg ohm) in switch control circuit, also if T601 is s/c the control chip TDA16846 will also be damaged
(Gordon w.Cox)
Sony TV Model: KV25K5U (FE1/FE1A Chassis)
No sound or vision, front led flashing
Replaced line output transistor, resoldered dry joints on driver transformer. Also check for any other poor joints in this section. Have used a 2SD1878 as replacement, This seems to work ok as the Sony original is very expensive
(A. Gould)
Sharp TV Model: 6GF63H (DA-50W Chassis)
Noise from speakers / center speaker even with the volume set at minimum
Replace IC1300 (BA4558F 8pin smd) and IC1302 (TDA7480) which are both located on the central speaker amplifier plug-in PCB
(J.C.)
Jvc Video Model: HRJ205
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
(Anonymous)
Normanse Spectra TV Model: 5207 (F11 Chassis)
Dead set, power supply ticking
R164 was found to be open circuit
(Anonymous)
Decca TV Model: D28NT92S (PT92 Chassis)
Dead set, no stby led
Check RP06 (3.9meg), RP05 (1meg) and RP07 (15R) in psu
(Anonymous)
Sanyo TV Model: Spectra 2000
Picture had only wide screen effect
Found set on the street ! beautiful little 14″ tv, still looks like new, replaced 33uF, 160v cap in power circuit as it was bleeding its guts onto the pcb, has worked perfectly ever since !
(Ronyec Andras – Montreal)
Teac TV Model: CT-M685 (ONWA Chassis)
Set stays in standby intermittantly or will int switch off to standby also brightness and contrast slightly low
Resolder all joints in the power supply (very small dry joints that need a microscope to find !) also check / replace replace capacitors C109 and C110 and check condition of other psu caps.
(Pappy)
Panasonic Video Model: NVJ30 (G-Deck)
Severe patterning of white streaks filling the screen in playback. E-E is ok
C1122 in the power supply unit. It is probably leaking its contents
(Rob Marshall)
Panasonic Video Model: NV-366
Front buttons (Play, FF etc.) don’t work
Caused by faulty remote control jack socket – this machine uses a wired remote
(Anonymous)
Matsui TV Model: 1420T
Dead set, P.S.U. not firing up
Resistor R511 (1.8M) open circuit
(Anonymous)
Salora TV(J Chassis)
Start up problems
Replace CB712 and CB726 in the power supply. Both are same value (4.7uF, 50V)
(Anonymous)
Goldstar TV Model: 20A80
No picture, FR406 ok
Check the video output amplifier stage for failure
(Zubair Almas)
Panasonic Video Model: NV870 (D1 Mechanism)
Noisy FM audio
Add a 0.01uF 50v ceramic capacitor between pin 9 of IC4509 and ground (only applies to units with serial numbers prior to D5K)
(Anonymous)
Panasonic Video Model: NV870 (D1 Mechanism)
Mode switch chatters
If it still does this with a new mode switch, check the serial number. If it’s prior to numbers beginning A5K… then add a 560 ohm resistor and a 50v 0.68uF electrolytic capacitor in series, between pin 2 of IC6002 and ground.
(Anonymous)
Panasonic Video Model: NVF70
No sound via SCART socket
Fit R4908 and R4910 on input/output pack, as they may be missing ! (Both 47 ohm)
(Anonymous)
Panasonic Video Model: NV730B (D1 Mechanism)
Video heads wear very quickly
Check the back tension if you haven’t done so already – it was set too high when manufactured.
(Anonymous)
Sony TV Model: KV2020
Picture is folded over at the top and curled at the top left hand side
Replace C559 and C560
(Anonymous)
Sony TV Model: KV1412
Noisy picture
Replace relay RY481 on S2 board
(Nigel Burton)
Sony TV Model: KV1412
Vertical line at the left of the picture
Replace L506 on A board, replacement part number 1-407-366-00
(Nigel Burton)
Sony TV Model: KV1412
Set reverts to standby mode when switched on, because IC003 does not reset correctly
Replace IC003 on A board, IC type CX523013P
(Nigel Burton)
Medion TV Model: MD7103VTS (11AK18 Chassis)
Power LED and Sound OK. EHT Voltage for 1 Second after switching on via Remote Control
Replace vertical deflection circuit IC605 (TDA8361) – don´t forget to apply Heat transfer compound !!
(Rainer)
Sony TV Model: KV28WS3 (AE3 Chassis)
No sound or picture, in protection after 2 seconds
No 6.5 Volt on G-board. Fuse resistor PS605 is broken on G-board. Cause: bad contacts
(Jan Post)
Philips TV (ANUBIS A-AC Chassis)
Low 95v rail, (35v)
C2530 open circuit completely
(P willis)
Panasonic TV Model: TX28W3 (EURO 1 Chassis)
At switch on a strange sound comes and goes for a few seconds, no sound and vision
Check R622, Q624 and T639
(Anonymous)
Grundig TV (CUC5310 Chassis)
Dead, no shorts found
Look for dry joints on the scan coil plug (may not be visable) also resolder the 12v and 5v regs
(Anonymous)
Sony TV Model: KV21GMR1 MkII
No raster, flyback squeeking
Check the damper diode, in my case it was leaky, also check the electrolytic capacitor connected from the collector of the pin out trans.
(Rams-Dumaguete)
Rca TV Model: F19220BK (CTC175L2 Chassis)
Erratic screen / intermittent, eprom causes multiple possible symptoms, clicks on/off, tuner, you name it !
Mass defect caused by bad solder in tuner, once fixed will probably last forever. Resolder tuner wrap-around groundings and all pins under tuner shield (bottom), if no success suspect a corrupted eprom
(Anonymous)
Sony TV Model: KV20TS20
Snowy or intermittent picture, makes popping sound
Solder all coils in stand up board and tuner
(Anonymous)
Philips TV (A10E Chassis)
Randomly switching to scart input when the programme output from the tuner should be displayed
This is now becoming a common problem, the cause being the painter chip IC7064 which is located on the small signals panel, there are 8 different versions but only 3 common versions
(Anonymous)
Schneider TV Model: DTV2
Shuts off after 20 minutes or so
Dry joint on FBT
(Chris Prestwich)
Sony TV Model: KV-M21TU (AE1 Chassis)
Intermittent rolling and loss of luminance, improves as set warms up
Dry joints on tuner / IF board
(Thunderdunc)
Sony TV Model: KV-21FS100 (BA6 Chassis)
No power, R640 open
Change R640, IC600 and associated electrolytic capacitor
(Iván Meléndez)
Philips TV-Vid Combi Model: Televideo
No vcr transport functions via remote
This is the symptom when the remote control has switched from the correct VCR1 mode to the VCR2 mode (usually due to low battery voltage or the batteries being replaced), to rectify the situation hold both the stop button and button 1 together for 5 seconds, alternatively for different remote versions holding the stop button and button 2 together for 5 seconds will rectify the problem
(Josh)
Toshiba TV Model: CF3060K
Problems with screen size
Look out for 2 x 2.2uF electrolytics (sometimes red in color)
(Anonymous)
Daewoo TV-Vid Combi Model: DVT-1482P (CP310 Chassis)
Totally dead except for a few rapid flashes from the green led at switch on
C811 a 100uF, 16v capacitor in the power supply was the cause, it is located next to the chopper transistor’s heatsink. This is the same TV/Video as the Goodmans TVC14VP
(Rob Marshall)
Panasonic Video Model: NV-HD675 (Z-Mech Chassis)
Intermittently shutting down with HO1 in display
Problem can be caused by stator board VEK9017 but in this case the problem was the upper drum assy! The bearings seize up when warm!
(E.T. Sandy)
Sanyo TV Model: CEP3011V-30 (A1-B14 Chassis)
After switching on, no longer able to switch-off with remote control, standby light comes on with sound muted. (Original remote control: RM-700)
Opto-coupler PC113 faulty
(Esohe)
Ge TV Model: PTK195AA (PTK195 Chassis)
Works fine for 10 or 15 min. (or sometimes 1 or 2 days) then bows from top and loses convergence
Replace the STK730-130, located on small board above the convergence module
(Clonch tv)
Lenco TV Model: 14P1MNA
Standby only
Check R101 (4.7ohm), TR102 (C6180) and C126 (47uF, 16V)
(Akalipt)
Sony TV Model: KV-M1400 (BE2A Chassis)
Insuficient vertical deflection. Line rolling on top of picture
Replace ceramic capacitor C524
(Pm)
Tandberg / Seleco / Sinudyne TV Model: 3TS645 (PC170 Chassis)
No vertical scan, just one bright line in the middle
Suspect R235 (18kohm), in some cases the TDA3654 may also have failed
(Jonnykvist)
Grundig TV Model: M70-490/9 TEXT (CUC3800 Chassis)
No sound, picture ok
When shifting up the channel frequency using the fine tuning, a very weak sound could be heard. Replaced the sound IF demodulator chip U2829B(IC2110)
(Rui Loureiro – Portugal)
Sanyo TV Model: CEP2190M
No sound
IC901 (TDA4935) blown due to excessive supply voltage, capacitors C619, C623, C810, C600, C601, C859 defective. Also verify R822
(Jeroni Paul)
Jvc TV Model: AV25S1EK
Field collapse
Resolder TDA3654 as joints appear good but on application of soldering iron show to be dry
(Pj)
Mitsubishi TV Model: CS40503
Sometimes will not power up, missing 15 volt standby
Replaced D982 and C982, both leaky
(Kami)
Sony TV Model: KV24FS100
Will not power, led blinking
check R640 (1K 1/4w) if open replace ic600 (8-759-670-30)
(Kami)
Schneider TV Model: STV630UK
Only half a screen of frame scan
Replace IC401 (TDA8177F). If any blanking problems occur after chip replacement, check R327 (1ohm) next to IC401
(Anonymous)
Sharp TV Model: DV6632H (4BS-C Chassis)
Led changes from green to red, fails to start up, no EHT but secondary voltages in psu ok (150V ok)
Check Q601 and Q606, these are Q600 LOPT drivers, there should be 2V P-P on base of Q606 and 150V on collector of Q601, replace Q606 with a BC182 (check pinout)
(Steve May)
Matsui TV Model: 25M3
Failure to start up, led pulses
Check for dry joints on R541 and D436 located next to L.O.P.T
(Niall)
Proline TV Model: 28N1 (F19 Chassis)
Procedure to invoke service mode
I have used this method and it works (supplied from the makers manual). With tv off, hold vol up button on tv, switch tv on and keep holding vol up button whilst pressing standby on remote (this must be done within 4 secs of switch on) at no time let vol go
(Steve Taylor)
Sharp TV Model: DV7045SN
No vertical deflection
R615 open (0.13 ohm 1/2W). Also resoldered many bad solder joints
(Jeroni Paul)
Jvc Video Model: HRD750
Tracking does not lock. Picture runs up and down occasionally
(Very) Small electrolytic caps on the drum circuit board must changed (They may be the bigger can type, if you don’t find small ones)
(Lassi Uuu)
Toshiba TV Model: 175T9B
Line tearing and incorrect field lock when cold
47uF electrolytic AGC decoupling capacitor inside tuner/if unit
(Colin fairfield tv)
Philips TV-Vid Combi Model: 14TVCR240
Poor tape transport, tape is crumpled, upper or lower side gets rippled
Replace the capstan roller, if the tape transport is still not smooth check the guidepole (between the audio/control head and the capstan), tape must touch border-ring. Adjust the audio head position (screws marked A and T)
(Anonymous)
Bluesky TV Model: TDX-70 (11AK19 Chassis)
HT low / missing
Q608 (BU2508) dead (short-circuited). Needed replacement. That’s all…
(Anonymous)
Panasonic TV Model: TC2195DRS (Z3T Chassis)
SMPS noise. Low volt and high current on Usyst, no screen or sound
FBT TLF15606F
(Anonymous)
Irradio TV Model: MC-FBC-006
Dead, i.c. oscillating (may start if i.c. heated)
Check / replace R602 (2.2M, 1/2w)
(Anonymous)
Sony TV (FE-1 Chassis)
Procedure to return EEPROM to factory default settings
Select programme 59, enter the service mode and at the TT– prompt enter 49 then 24 (for UK)and 08 then switch off at the mains
(Anonymous)
Sony TV (FE-1 Chassis)
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
(Josh)
Sony TV Model: KV-E2543E
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especialy the one very close to plastic frame
(Jose Carlos Pinto – Oporto)
Toshiba TV Model: 2505DB
Stretched frame or frame collapse
Replace modification diode 570 on copper side
(Anonymous)
Hitachi TV Model: C2846TN (311 Chassis)
Frame collapse or dotted line
Check and replace frame ic (TA8427K) or check R710 for open circuit, also check for possible dry joints on D601
(Jimmy n)
Sony TV Model: KV-A2923
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
(Anonymous)
Hitachi TV Model: C1714T
Frame collapse, causing set to go dead, also can cause the regulator transistor, to go s/c. BUT12AF. H.T. unstable
Check R951 (39K) goes high, in this case 65K, causing HT to go high
(G3xxr)
Philips TV (GR2.1 AA Chassis)
Poor picture quality from CVBS EXT1 and EXT3. Low intensity high saturation. Loss of sync. Shock and temp dependent
Dry joints on SMD resistors 3014 and 3019 on IF/Sound module other side of encapsulated TDA2549
(Choc’s maker.)
Sony TV Model: KV-A2923
Standby led blinks slowly, a few times, chassis won’t start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok !
(Anonymous)
Sony TV Model: KV21M1D
Picture disapears a moment after changing program. Raster/OSD ok
Replace TDA9806 ic
(Apostol)
Goldstar TV Model: CBT-9745 (PC91A Chassis)
Attempts to start up. When main switch is pushed ON, relay coupling and decoupling (on-off, on-off)
Replace: C805 (47uF, 50V) next to the TDA4605 and C801 (1uF, 50V)
(Zoran)
Goldstar TV Model: CBT-9745 (PC91A Chassis)
TV dead. PSU ok, led lit. When button pushed on remote the LED goes out but set does not start (Missing HF voltage)
Replace: C417 (1uF, 250V) Elko for HF oscill. (next to HF trafo)
(Zoran)
Philips TV (FL1.1AA Chassis)
Int shutdown with lights flashing
Check the 18v zener D6376
(Anonymous)
Philips TV Model: 20PV164-05
Vertical frame collapse
Change vertical output drive IC and nearby electrolytic capacitor
(Bugtom)
Nokia TV (FX Chassis)
Left part of picture missing after fitting vertical modification kit
Make sure you have fitted the extra capacitor between pins 8 and 9, instead of 10 and 9. Fitting incorrectly will destroy the sandcastle pulse and make the picture appear strange
(Kalle Birgersson, Sweden)
Nei TV (CE25 Chassis)
Dead – PSU clicking
Dry joints on D116 and C131 causing blown BU508A
(Andy Fraser)
Grundig TV (CUC5310 Chassis)
Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
(Kalle Birgersson, Sweden)
Schneider TV Model: STV630UK
Frame Collapse
Replace IC401 (TDA8177F) and resistors R325, R326, R327
(Jim Ross)
Matsui TV-Vid Combi Model: TVR185
Int sound
Check voltage on sound IC, if it drops with high volume change C620 (1000uF, 25 vdc)
(Arl)
Sharp TV Model: 66GF-63H
Blank grey raster with flyback lines,sound present and ok
Check pin 2 on connector H on tube base for 12V if high then check Q912 (BC337) for o/c
(David Mclellan)
Sony TV Model: KF60XBR800
No picture no sound timer light flash 44 fast 45 then 5 times then 5 times
Replace power block part # 1-468-510-11
(Mervin)
Toshiba TV Model: 198X6M
Horizontal output continues to short
Check capacitors C403 and C408 (both 50v) these two caps tend to change capacitance
(Aze – Philippines)
Philips TV Model: 28PW6005 (A10 Chassis)
Changes to ext 1 when watching tv (ok with video input)
Painter ic IC7064 failed on the ssb (small signals board)
(Anonymous)
Philips Video Model: Turbo Deck
Chews tapes and poor tracking
Fit new pinch roller
(Cee dees)
Thomson TV Model: RP46
East-west and north-south bowing. Really bad convergence
The extra power supply is not working. Check R18 on primary side. It should read 220Kohm
(Kalle, Sweden)
B and O TV Model: LX5500
Sound disappears from time to time
If there is sound all the time via scart, but problem with both mono and stereo via tuner, check R137. It is a 4k7 pot on the tuner board
(Kalle, Sweden)
Rca TV Model: F27442 (CTC203AD5 Chassis)
No power, all standby voltages ok
Replace the guide plus. is located to the side of the tuner
(Fher)
Philips Video Model: VR678
Reel brakes not operating
Due to broken plastic pivot for pulse slider (item 110) mounted on chassis (does not look like replacement part but wve stock holder, pulse mech kit Pt no. 16256HL)
(Anonymous)
Bush TV Model: 2071NTX (11AK19 Chassis)
Black screen from tuner but OSD (menus and channel no.), teletext and sound work normally
Q500 and Q504 blown, replacement cured fault. Removing R508 also restored picture. Fault puts TDA8840 in RGB insertion mode continuously, so separated RGB input might still work
(Joe Kelleher)
Magnavox TV Model: RP2781 C101 (27X105-00AA Chassis)
No vertical deflection
If resistor R445 (1ohm) has gone open circuit this may cause IC550 (LA783x) to also fail. Replaced both IC550 and R445
(Daniel)
Sony TV (FE-1 Chassis)
Procedure to display past error codes and the number of times they have occured (particulary useful for ongoing intermittent faults)
Enter the standby mode then press the on-screen display button (i+), 5, volume down, and finally the tv button. Note: the error count can be reset by pressing 8 then 0 on the remote control
(Josh)
Sony TV (FE-1 Chassis)
Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !
(Josh)
Philips TV Model: 33SL5796/16B (FL 1.0 Chassis)
Snowy picture specially in VHF band. After about 5 minutes, picture snowy in all bands. About 10 minutes after switching on, no picture nor sound, just snow on the screen
Replaced the TUNER/IF. Original code was FQ816ME which is no longer in production. Replacement code is FQ916DME
(Rui Loureiro – Portugal)
Sony TV Model: KV-21RXR1
Excessive brightness/ brightness control reverses its function
When setting brightness to minimum the pic became very bright, setting to maximum the picture became dark ! Found that R301 (270k ohms) near the jungle IC was o/c
(Aze)
Philips Video Model: VR6448 (20921 Chassis)
Mechanism jammed, some posts hard to turn
Grease has turned into cement!! Oil most of the moving parts, and move them to ensure oil penetrates
(Anonymous)
Universum TV (11AK19 Chassis)
Narrow Picture
After resoldering joints in the line output stage, check R629 (27ohms, 1/2w) safety resistor to E/W FET, also o/c capacitor C630 (0.47, 250volts). According to the schematic R629 is 2.7 ohms
(Conrad626)
Philips TV Model: 14PV220 (EPSILON 2001 Chassis)
Dead (Totally)
SMPS Chopper IC 7310 (MC44608 P75). I had no output from pin 5 with start up voltage pin 8 OK at 290V. If start up missing check start up resistor 3335 (1K). The only source I found for IC 7310 was Philips direct, part number 9322-143-51682, cost ~ £10
(Paul van gelder)
Philips TV Model: 21GR2751 (G90B Chassis)
Stereo set with no sound off air, maximum volume produces low hiss, some sound possible if station is detuned slightly. Sound via SCART is ok
Replace IC U2829B on audion panel
(Bill)
Nordmende TV Model: GALAXY 55 (ICC8 Chassis)
Dull picture
Replace (TT33) on tube base
(B goan)
Nordmende TV Model: GALAXY 55 (ICC8 Chassis)
Not tuning into channel
33v missing (RH040) o/c
(B goan)
Telefunken TV Model: PALCOLOR F531 (ICC9 Chassis)
Stand-by led flash but set does not start
Replace: TL19 (BUH517), DL21 and DL22, CL21 and CL22
(Anonymous)
Orion TV Model: TV2501B
Dead set or will start up and shut down
IRD shorted or leaky
(Clonch tv)
Sony TV Model: KV2062
Dark picture, No brightness control
1000V+ Missing caused by open circuit IK resistor Near to FBT
(Imran Khan)
Sony TV Model: KVFX29 (FX Chassis)
White horizontal line (no vertical deflection)
Check / replace R548, R549
(Fabio)
Goldstar TV Model: CB20A86
Dead, F801 blown
Check short circuit PTC coil (Degauss) short Diode on main Cap+ Check for failure of regulator IC801 (STR5707), Also check H.output D1651 for short circuit
(Imran Khan)
Toshiba TV Model: 32ZD09G (C00S Chassis)
Procedure to enter the service mode
Press the mute key on the handset once, then press the mute key for a second time but hold it down while also pressing the menu button on the set
(Josh)
Schaub Lorenz TV Model: DS2 (DTV2 Chassis)
Procedure to enter service mode
Press and hold service button on PCB inside TV. Press `C` on remote. Press program no. where your test picture is, You are now in service mode
(Anonymous)
Akai Video Model: VSG2DPL
Tape loading carrage is very loose and sloppy will not load and eject tape properly
Mode switch is faulty, out of alignment or has a bad connection back to the PCB. This switch is located underneath the tape drive mechanism
(Anonymous)
Samsung TV Model: CB7230WT
Power supply flutters and standby light dims out
Replace mains filter capacitor (220uF 400v), also make sure the 4 capacitors in the primary are replaced (if they havent already been)
(Anonymous)
Samsung TV Model: CB7230WT
Vertical failure (common fault)
The reason for the failure is because the yoke is low impedance. The TDA3654Q i.c. has been designed to handle 12 ohms and over. Heat is the reason it destroys itself, the best cure is to place a small cpu fan on the heatsink
(Anonymous)
Philips TV Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
After replacing the line output transformer, the following sympton was displayed. Display flashing standby light and stereo II
Short s23 and s24 briefly, which will put the set into service mode. Option 1 should read 010 this applies only to the 25FL and 29FL. Option 2 should be 001 for sets with text and 004 for sets without text
(John Carey)
Jvc TV Model: AV28WZ2
Blank raster
Replace defective TDA6111Q for Red, Blue and green
(Rens van der enden)
Thomson TV Model: 28VK-44E
No start-up when cold, warm OK
Changes CP198 (47uF, 16v). Secondary Power supply
(Rens van der enden)
Philips TV Model: 14PV184
Dead set / blown fuse
Replace D6313, 6314, 6315, 6316 and R3337 (2R, 5W)
(Skyprobe)
Panasonic TV Model: TX21AD2DP
Stuck in standby but tripping, not the usual nvm problem and nothing s/c
Check and replace C804 (1uF, 25V), C806, C807 (100uF/50V) in supply. Use 105 degrees cap. types
(Rob’s TV-service – Holland)
Philips TV Model: 25FL1760 (FL1 Chassis)
Set tries to go to stereo as indicated by the on screen display, but most of the time it is stuck in mono, when in stereo the right channel was hissing
Replace the TDA8415 on the stereo decoder board, confirm this buy putting multimeter on pin 7 and 8, they should have a voltage of 3.2 volts
(Cannny)
Philips TV Model: 29FL1770 or 25FL1760 (FL1 Chassis)
No pictures or sound
Disconnect the P1 and P2 plugs on the right hand side board. L.o.p.t. side. If the set now starts up then change all sound output IC’s
(Cannny)
Philips TV Model: 29FL1770 or 25FL1760 (FL1 Chassis)
When selecting a channel it locks in initially but will then go off tune (as if the voltage tuning had varied)
Replaced the TDA i.c. in the tuner i.f. section. (tried the capacitors first of course).
(Cannny)
Philips TV Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
Lights flashing at the front, if carefully interpreted they point to the primary of the power supply
Replaced 2SB 3795B chopper transistor, heated the heatsink with a hair dryer and it started right up, weird as the transistor was reading fine
(Cannny)
Decca TV Model: D20RDE6 (D Series Chassis)
No luminance(looks negative picture)
We spent over 2 hours on this set and in the end we swapped the chassis with a scrap chassis and the fault remained ! It turned out the fault was with the CRT
(Anonymous)
Samsung TV Model: 20A5
Partial field collapse
Check IC301 (TDA8350Q) and the 2 associated unmarked capacitors (10uF and 100uF, 63v) and the 10ohms,5w ceramic resistor across pins 3/5 of the above chip
(Anonymous)
Sylvania TV Model: SRT2127ST
TV will not start up, fuses ok
Change IC601
(Paul Niswanger)
Panasonic Video Model: NVJ45 (G DECK Chassis)
Appeared to be dead (like C1110 1uF, 400)
Found C1125 and C1130 (680uF, 20v) leaking onto pcb. Remove sm.tx and clean board
(E.t.sandy)
Orion TV Model: TV2501B
Dead set
Found the IRD shorted
(Anonymous)
Telefunken TV Model: Palcolor S540C (ICC9 Chassis)
Geen blauwe kleur
SMD transistor TV81 (Bc858) defect.
(Anonymous)
Blaupunkt TV Model: MS70-79VT (FM500-70 Chassis)
Horizontale gekartelde stoorpatronen in ‘t beeld ‘t eerste uur.
Cond. C542 slecht
(Digneffe Roger)
Samsung TV/Video Combi Model: VM3105
No video, no audio. High pitch sound from power supply.
Replaced blown fuseable resistor R417 (1 ohm, 1/2 watt)
(Angel Torres)
Bush TV Model: WS6690D (11AK19 Chassis)
At switch on front l.e.d turns green, blinks twice then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
33 ohm resistor feeding standby 5V reg was high (8 ohms – not shown cct diagram), in my case D605 on the 45 volt supply from the LOPT was faulty, although it measured o.k
(Supadan)
Thomson TV (TX807 Chassis)
Plain raster, retrace lines, no sound
Problem in vif board, Resistor 68 ohms to +b supply line 12V
(Guruji)
Ferguson TV Model: 626R (TX807 Chassis)
(H)VTU Tension de sintonia 99v pero en el zener DH01 (ZTK33A) hay 22v.
Sustituir zener 33v (ZTK33A)
(Eisi)
Hitachi TV Model: C2146TN
Dead / int, led lit
Check the 5v regulator IC952, 8v regulator IC951, standby regulator IC950 and the field output chip (TA8427K) or for dry joints on the regulators
(Anonymous)
Nordmende TV Model: F20-9 (ICC7 Chassis)
No colour
Check IV01 (TA8659) or IE50 (TEA2114)
(Anonymous)
Goodmans TV Model: 2029T
Blank raster with no sound (eht & tube heaters present)
ZD401 s/c. Also take a look at R419. This set had been left on and R419 had cooked, it’s value went to 20K
(Terry)
Sony TV Model: KVG25M1
Dead
Found Q802 (C4927) short, replace with same type as no other types last
(Seles)
Panasonic TV Model: TX-2470
Cogging on vertical elements of picture, p.s.u squealing
Replaced C808 (10uF, 50V) It had gone low in value
(David Roberts)
Panasonic TV Model: TX21V1 (Alpha 2 Chassis)
Bright red raster with flyback lines,shutting down after about 30 seconds with squealing from power supply
The fault was due to the supply choke to the red output stage on the tube base panel being O/C, I can only assume the shut down was due to excessive beam current, a long soak test proved all was now ok
(Thunderdunc)
Philips TV Model: 20PT3742
Dead with LED blinking 4 times
The vertical output IC. is short circuit
(Imran)
Panasonic Video Model: NVG30
Operates for about half hour to an hour and shuts down
Capstan IC located on the underside of main PCB was dry jointed due to exessive heat. Remove and discard plastic cover and apply fresh solder removing old. Also refresh heatsink compound.(I’ll try extending the heatsink too)
(Farouk)
Ferguson TV Model: M8422U (ICC17 Chassis)
LED flashes once the 6 times then goes to standby
Replace LOPT
(Gordon )
Philips TV (L6.3 Chassis)
Failure of fusible resistors R3929 and R3930 (both 560R)
Unfortunately when these blow it is a sure symptom of LOPTX failure. When replacing these resistors, check the big blue 470nF, 250V capacitor behind them for signs of heat damage and replace if necessary, to avoid a recall (With resistors gone again!)
(Rob Hancock)
Aiwa TV Model: VXT1400
When switching to STBY raster remains and buzz noise is heared from the speakers
Cause: +B voltage (103 V) does not switch-off. Remedy: Replace defective C541
(Vitaly)
Schneider TV Model: STV515
No sound, no picture (dark screen)
This was due to IC101 (VCU2133)
(Anonymous)
Akai TV Model: TV2034
Appears to be stuck in standby with the front led flashing and the h.t. at about half the correct voltage
This set led me a merry dance until i discovered the set was actually in the child lock mode !! The problem was solved once this was disabled using the remote control
(Josh)
Sharp TV Model: 51DT-25H
NVM modification / symptoms such as no video, tuning drift & reduced height from cold
Fit 2 zener diodes (part no. RH-EX0404BM22) in positions D510 and D511, fit coil (part no. VP-CF120K0000) in place of link J122 and fit zener diode (part no. RH-EX0412BMZZ) in position D403
(Josh)
Beko TV Model: 12.8
The +Ub voltage (+118V) was not present, fault in switching power supply
Transistor T901 (SK2545 or P3NB60FP) had failed. Replace it and check C908 (22uF, 35V) replace it with 22uF, 50V. Also C912 (1uF, 25V) replace it with 1uF, 50V and D906 (1N4148) always replace it with 1N4948T
(Jo)
Philips PLASMA TV Model: 42FD9954 (S FM24 Chassis)
Green dots flashing over the screen in AV mode
Change resistor value R3641 from 1K to 100ohm
(Ab)
Beko TV Model: 12.8
No audio
Check and replace ic101 with STV2246C and check and replace c135 (100uF, 16V) replace it with a 220uF, 50V. Also check and replace C308 (470uF, 16V) replace it with a 470uF, 50V
(Jo)
Beko TV Model: 12.8
Red or Green or Blue screen
Check and replace on crt module : D702, D703, D704 (all 1N4148) replace with type 1N4948T
(Jo)
Toshiba Video Model: V642UK
VCR is locked out, no sound, noise picture and front panel buttons do not work. NVRAM has been lost
Access the NVRAM menu. On remote hold A-Dub button for 10secs, VCR display will read TEST, then hold the menu button until the NVRAM menu is displayed on screen. I do not know the codes for this model, if anyone knows them please pass them on!
(James)
Philips TV Model: 24PW6005 (A10E Chassis)
Intermittent or no sound, mute transistor not switching on, ref 7701.
Possible software problem! replace micro. Circuit ref 7064 part no 3111 250 545 11. If thats too expensive then try fitting a 22k resistor collector to base of transistor 7701 in mute circuit!
(Phil)
Sharp TV Model: 37DT-25S
Dead, fuse ok
Replace Q701 (P3NA80FI) with a P4NB80FI-mbr. Check Q702 (BC338). Replace R703 (5,6E, 5W), all components in supply. Check print for poor contacts
(Rob’s tv-service – Holland)
Panasonic Video (K Deck Chassis)
Procedure to display fault codes
Press FF, REW and EJECT simultaneously OR where a Shuttle Dial exists press EJECT and CUE Forward
(Anonymous)
Philips Video Model: VR6264
No video or RF output. 12.3Vd.c. rail from 7002 (BD678) dead
Fault traced to dead short component located on PCB502 at componet ref no. 2024 (Philips blue radial capacitor 330uF, 16V). Philips part number 4822 124 40849. Cap has markings 036K0 T0 on it. Replaced and all sprang into life ok
(Andrew Finch)
Continental TV Model: CE3701 (Grundig G1000 Chassis)
Note on obtaining a replacment remote
If you try to get a replacment remote no one will recognise it but the Grundig G1000 RC1/2/4, will work fine
(Arl)
Alba TV Model: CTV4809
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok
(Errol Rankin)
Goodmans Video Model: VP2500
Video keeps spitting out tape
Re-align video deck, clean dirty heads etc, all now ok with vcr
(Errol Rankin)
Sony TV Model: KVX2952U (AEIC Chassis)
Int black and white picture, colour disappears
Replaced IC TDA4580 and all ok
(Errol Rankin)
Sony TV Model: KVX2972U
On/Off switch popping out when pressed
On/Off switch push pad broken, repaired push pad and switch now ok
(Errol Rankin)
Ferguson TV Model: 59K7 (ICC5 Chassis)
Severe vertical jitter on picture, horizontal sides of picture ragged
Replacing the TDA4950 cured the fault
(Errol Rankin)
Jvc TV Model: C14E1EK
Tuning drift,worse at high channel no’s
Dry joints inside tuner unit, connections between edge of pcb and lugs
(E.T.Sandy)
Thomson TV Model: 24WK25US (ICC17 Chassis)
No/Low contrast after EHT flashover
Check/replace TL02 and TL59 in the beam limiter circuit
(Mick Pope)
Sony TV Model: KVJ29MN21
Unable to switch on with remote and no LED display at the front of set
Due to STBY 5v missing. Checked and found the 5v reg/reset IC002. (L78LR05D) was s/c, replace the IC to clear the fault
(Anonymous)
Philips TV Model: 25PT4103 (L6.2 Chassis)
Blank screen no audio. No results from tuner or SCART socket. When G2 on LOPT is wound up a red line is visible
Check R3438 (3R3). In my case this was o/c and a replacement restored normal opperation
(Paul Godfrey)
Grundig TV Model: T55-640 (CUC 6300 Chassis)
Sleep timer box on screen, remote & front buttons not working
Changed the EEPROM IC847 (24C04)
(Urhoej)
Akura TV Model: AP2821-S
Dead
Replace RP05 (1 meg, 1/4 watt)
(Darren)
Toshiba TV Model: 2573
Stuck in standby.
Replaced ZP82 (o/c) And tuner (internal short)
(David Roberts)
Toshiba TV Model: 28WD98B
Stuck in standby, 16 volt line low at approx 8 volts
Replaced C872 (220uF, 50v), original had gone low in value
(David Roberts)
Bush TV Model: 28ZKF
TV seems to be dead apart from the front leds
On main board check Ntype TX BD441 which is clipped to the main heat sink. The clip can come loose causing the TX to overheat and melt its connections to the CB. Remove TX test and if OK solder back on making sure TX has good connection to the heatsink
(Anonymous)
Goodmans TV Model: 285NS
Buzz on sound when volume at low level
Dry joints on earth pegs of heatsinks of audio and frame output ICs – confirmed by comet service, long time ago!
(Steve)
Vestel TV (11AK19 Chassis)
Screen blanked out,with 4 coloured lines two thirds of the way down from the top of pic. Sound OK
R704 (100 ohm resistor) connected to pin 6 of the frame output chip was o/c
(Anonymous)
Philips TV Model: 28PW6332/05
Loud bang internally, then completely dead. Plug fuse ok. Set about 4 years old
Internal 4A fuse blown. Bang was 330pF cap 2540 across PSU MOSFET exploding, suspect went s/c. Diodes 6513 & 6511 cracked and s/c. Replaced C2540. Could not get diode 1N5062/BYW55 rep, so replaced all 4 diodes with BY399. PSU MOSFET removed and checked,ok. Voila
(Andrew Wilson)
Panasonic TV-Vid Combi Model: TX-14/21GV1
No operation, standby led blinking
Replaced C840 (47uF, 25v) which had gone low in value
(David Roberts)
Lg TV Model: CF-28A50T (PC-58A Chassis)
Flyback lines on pic
Check resistor R351 in front of TDA8350Q. It should be 3.6 K. I replaced with 3.8 K and it worked fine. Additionaly check: R708, FR704, FR359, Q351, Q345. If fault persists try replacing the TDA8350Q
(Nikita – Germany)
Ferguson TV (ICC17 Chassis)
Dead Set
Check DP21, 39V Zener, in the startup circuit
(Anonymous)
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
(Josh)
Panasonic TV Model: TX28DK2 (EURO 4 Chassis)
No surround sound
As Mark said in a fault on the Euro 4 chassis, Replace the TDA2030.
On this model there are three TDA2030 s. If you have to replace any also as a matter of course replace the two regulators Q2701 and Q2702 or the chances are the TDA s wont last long
(Anonymous)
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
(Josh)
Sony TV (FE-1 Chassis)
No sound
This may be remedied by entering TT24 in the service mode, if fault persists Q202 (2SC2412K) could be leaky
(Josh)
Sony TV (FE-1 Chassis)
Pressing the screen format button displays wide, smart, zoom and 4:3 modes but settings have no effect on picure
Enter TT35 in the service mode to select a 4:3 CRT
(Josh)
Sony TV (FE-1 Chassis)
Purple line down picture
Replace IC301 (CXA2060AS), part no. 8-752-082-35
(Josh)
Sony TV-Vid Combi Model: KV-20VM20 (SCC-H16B-A Chassis)
Would not eject the tape
Replace Elevator activator rack (Broken) REF# A34 OEM# 9-908-164-01. – UL# 146T – Set MFG. by Goldstar Similar To: Zenith TVR1920 & KV-13VM20
(Don Hutcheson’s tv service center)
Imerial TV Model: 36M92 (11AK03 Chassis)
Tv stays in stand-by when the power is swiched on. No response from the remote or any button on the set
R603 (3.9Kohm, 5W) was o/c
(Patje – Belgium)
Luxor TV Model: MP63P1 (6362-71 Chassis)
Totaly dead without any signs of life!
Flyback transitor failed (S2000AF)
(Jonnyk)
Philips TV (A10E Chassis)
F on top righthand of screen then loss of geometery data and int shutdown, unable to restart but when try do so set cuts out
Painter IC failure, A small 100 leg device a joy to change if you have the right gear ! Ref IC7064 also updated software on new IC
(Christv)
Samsung TV Model: CT566 (K51A Chassis)
No power
Voltage not changing on pin 18 IC901 (SZM-368ET2)
(Anonymous)
Hitachi TV Model: C2133TN (Nokia Stereo Plus) Chassis)
Very strong red content in the picture, sometimes the fault would clear with the strong red content fading until the correct greyscale was achieved
After much searching around i found the problem. There was a very small crack in the solder at RH23, this is a 2K4 surface mounted resistor located at the back of the tube base. Resoldering both sides of it cured the fault
(Sparky)
Jvc TV Model: C-V14EKS/B/W (Onwa Chassis)
No Red
I was hoping the nvm had become corrupt and turned the red drive down but it was fine (To enter service mode press and hold vol up and vol down on the front panel and switch set on). Thankfully ZD405 (8V2) had expired (almost s/c) and removed the red
(Andy Doswell)
Sanyo Video Model: VHR776E
Dead
Check and replace PR512 (which is located towards the front right hand side)
(T.t.r.s. – Tim)
Nikkai TV Model: BABY 10
No / int luminance
Poor contacts within the service switch
(John)
Sony TV (AE1 Chassis)
Field non linearity and short picture
Check / replace C531 (680uF, 25v), only slightly leaky, but a new one cured the fault
(Anonymous)
Philips Video Model: VR200
Unit not working, no FL display, ticking from PSU, head drum twitching
Electrolytic cap in PSU primary dried up (47uF, 50v)
(Anonymous)
Ideal/Slx TV Model: IDTV28T/IDTV28N/SLX28T2/28N (SM2 Chassis)
EW fault then set went dead (tripping), R711 on EW panel burnt
Check for dry joints on C620 (0.47uF, 250V), if dry replace then check Q602 and R618 (5K6). Also it is worth replacing Q580 anytime these sets come into the workshop with a BF422
(Leonard O’Brien)
Philips TV Model: 25PT4423 (L6.2 Chassis)
Stuck in standby, LED on, no HT
There may be no 5V to the microprocessor. Check R3509 and D6501. Replace R3509 with a 47k 1 Watt version (4822 053 10473). D6501 is type BZX79B5V6 (4822 130 34173). Check the +150 volt rail, 145V is too low
(Adel Ibrahim)
Rca TV Model: F27442 (CTC203AD5 Chassis)
No picture and sound, only a high pitch sound at switch on
Remove horizontal transistor and measure the resistance across any two pins. This value should be no less than 200ohms
(Roughtest)
Sony TV Model: KV-M2131U (BE1 Chassis)
Intermittent loss of syncronisation, both horizontal and vertical
The surface mounted power transistor on the teletext module requires resoldering. As there is evidence of scorching on the board the use of a more substantial component would be indicated perhaps with small heatsink
(Desmond Armstrong)
Samsung TV Model: CZ-21D83NS
Double picture or raster shifted
Check R414 (15K)
(Leonard)
Sony TV Model: KV2565
Dead with H. output short circuit, replacment blows short again
First check power area and repair dry joints then change all high voltage (PF value) capacitors in the horizontal section, this fixed the problem
(Imran Khan)
Mitsubishi TV Model: CT29B2STX
Various faults, dead, int. dead, poor frame, poor E-W
Change all electrolytic capacitors in the primary. Check all large electrolytics in the secondary (Ie bigger that 470uF), check all capacitors around IC950 (error amp.). Most capacitors you will find are leaking electrolyte. Might be a long job!!!
(Andy Doswell)
Sony Video Model: SLV-E800
No picture – screen is empty. Sound is ok
Check IC101 (BA7630F), if video signal comes to input (pin 1) but not present at output (pin 14) then replace this IC
(Raymundo)
Panasonic Video Model: NVHD650B
Fault code F80. works occassionally then doesnt work at all
There is a plastic piece on the motor which rotates when you press play or eject. A plastic cap fits on the spindle of the motor. This slips and doesnt grip the motor hence does not turn the drive gears. Just glue or replace the part (use loctite or super glue)
(Dal)
Philips TV (A10 Chassis)
Procedure to view customer service menu
Press Mute button on handset and any button on the TV, hold for a few seconds and menu will appear
(Joe)
Ferguson Video Model: FV105HV
Vcr dead, slow oscillation in p.s.u
Replace CP007 and CP008 close to the U4614B (Found this tip posted under Thomson VPH6601 which seems to have the same PSU)
(Anonymous)
Philips TV Model: 32PW6526-05 (SA10E Chassis)
Procedure to exit child lock with pin unknown / “locked” displayed on screen
Switch set on, press menu, select feature and press enter, select parental lock and press enter, then enter the code 0, 7, 1, 1 twice, the lock should now have cleared
(Josh)
Fermendi TV (F19 Chassis)
Procedure to invoke service mode
I have used this method and it works (supplied from the makers manual). With tv off, hold volume up button on tv, switch tv on and keep holding volume up button whilst pressing standby on remote (this must be done within 4 secs of switch on) at no time let volume go, press the yellow memory button on the handset to store
(Steve Taylor)
Toshiba TV Model: 28W23B (11AK37 Chassis)
Procedure to enter the service mode
Press the menu button then 4,7,2,5
(Josh)
Toshiba TV Model: 28W23B (11AK37 Chassis)
Picture displaced vertically, picture too high or low
This problem was cured by entering the service mode (menu then 4,7,2,5), then pressing the green fastext button to access geometry settings, selecting VP1 (vertical position) and adjusting as necessary
(Josh)
Sony TV (BE3D Chassis)
Procedure to enter the service mode
Press standby, i, 5, vol+ and tv (TT should now be displayed on the screen indicating the set is in the service mode)
(Josh)
Grundig TV (CUC7301/3 Chassis)
Power supply blown
This is often caused by a dry joint at C669 in the snubber network but also check the mains bridge rectifiers reservoir capacitor (47uF, 385v) for o/c, this item is not included in the ususal p.s.u repair kits and if not checked may result in a repeat blow up !
(Josh)
Sony TV Model: KV32TS20
Dead no click, Q502, Q601, Q602 shorted and blown fuse 602
Change all the above parts and also check R647, C512, C525, D607, D608, D609, D610, D622, VDR601 off primary side of T605. I`ve also found T605 bad too. ToughDog, Sony has bulletin out on this model
(Dwayne)
Sony TV Model: KV32TS20
Dead, good tip that I always use to save changed parts after replacing Q502, Q601, Q602 and blown fuse 602
I hook up 100 watt light bulb across fuse conection, then turn on tv, if light is very bright you still have a short. You saved the parts you changed, light should be dim and or blinks
(Dwayne)
Sony TV Model: KV27TS20
Intermittent video or snow
Resolder points A, B, C, D in tuner PCB, check cold solder on tuner shield 2-106-349-21
(Dwayne)
Ferguson Video Model: FV70B
Dim display
Check capacitor CP41 (220uF, 10v)
(Tom)
Panasonic Video Model: NV-L20
Poor playback and recording (looks like poor heads). Also shows as interference when playback appears
Check all electrolytics in secondary of switch mode power supply
(Ray)
Hitachi Video Model: VTM640
Low video level
Replace C1530 (47uF, 16v)
(Mt)
Jvc Video Model: HRJ235EK
Rubbing noise at start of full tape with horizontal picture judder
Excessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1
(E.T. Sandy)
Vestel TV (11AK19 Chassis)
Dead, ticks from switch on
Lop transistor dead short (BU2508AF) also check cap (12nf)
(Jonny)
Bush TV Model: WS6671 (11AK19 Chassis)
Very low width and bowed verticals,no ew correction. R626 o/c
C630 (390nF, 300v) faulty, located next to scan socket. This fault can also be caused by R629 (2R7 fusable) o/c. In my set C630 was dry-jointed but not faulty. Check generally for dry joints in the E/W and PSU areas. Note that R629 is a safety component
(Ian – Brighton)
Ferguson TV Model: TX98 (TX98 Chassis)
Intermittent tripping and switching to channel 1
Replace IC11 (TDA8138) 5/12 volt regulator ic
(Steve – Comet service)
Metz TV (11AK20 Chassis)
Switches to standby when hot
Check 4.00Mhz Xtal
(Wayne Haverson)
Sony TV Model: KV-M1400D (BE2A Chassis)
Retrace lines on picture, 60V on RGB transistors
C700 (100nF, 250V) seems to be leaky, but main problem is R723 which had gone from 27R to 1.2M, both on CRT board
(Anonymous)
Sony TV Model: KV-M1400D (BE-2A Chassis)
Dead, after replacing ic601 (STR54041) and Q601 (BC637) standby led blinks red twice, then blank, no HV
Replace fuse p801 (ICPN15 – 0.6A 50V, TO92)
(Anonymous)
Amstrad Video Model: DD8900
Bottom deck fails to load tape when pressing play/record. Sounds like loading motor is labouring when the pinch roller engages capstan shaft
The loading may complete if black pulley wheel on motor drive is ‘helped’. Look for stiff linkages before suspecting Motor
(Anonymous)
Tatung TV (F Series Chassis)
Starts up with black raster, then shuts down with LED blinking 4 times
This is the micro telling you that the auto grey-scaling procedure has failed. Change resistors R909, R913 & R922 (180k, 1%) on crt base PCB. You will probably find that all these have gone high
(Rob Hancock)
Matsui TV Model: 1408T
Locked out by incorrect pin number being used – and Dixon’s want £25 to do this!
1: Press standby on remote control to switch TV on
2: Press volume minus button on set front, while pressing 7 on remote control for at least two seconds, until ‘OK’ appears in the middle of the screen
Thanks to my son who has no TV training at all!!
(James)
Panasonic TV Model: TX28W3 (EURO 1 Chassis)
No raster, only heard a pip from speakers that went after a few seconds
C623 and R628 changed
(Nima)
Grundig TV Model: ST70-460 (CUC4635 Chassis)
Intermittent start up and tripping
Dry joint on R636, vertically mounted 4.7 ohm wirewound in sw mode circuit
(Peter Nutkins)
Nei TV Model: 2031TX
No Power
R802 open circuit. Unknown device (poss. Thermistor). Replaced with 15K, 2Watt
(Anonymous)
Sony TV Model: KV-2565MT (SCC-E64P Chassis)
Horizontal output transistor Q802 goes short repeatedly
C818 (1uF, 250v) had lost capacity, replaced C818 and Q802 and unit was ok
(Fiesta Service)
Sony TV Model: KVD-C21MF1 (SCC-K68A-A Chassis)
No sound and screen not appearing, B+ ok
No input on pin 5 of IC301 (MC44002P), R339 had failed, once replaced the unit was ok
(Fiesta Service)
Bush TV Model: 28ZKF
Set powers up but no sound and blank raster
RF10 o/c (33 ohm)
(Rod)
Panasonic TV Model: CT20G12V
Dead
This was found to be due to the STR58041 chip
(Anonymous)
Philips TV Model: GR2.4AA (GR2.4AA Chassis)
No picture, just black screen
Check R3414, an SMD chip on the CRT board. There could be invisible bad solder joints
(Kalle Birgersson – Sweden)
Panasonic Video Model: NVJ40
Poor picture, may clear as unit warms up
Check C27 in the power supply secondary
(Anonymous)
Philips TV Model: TX2112 (U5N Chassis)
Sound mutes for too long when changing stations (up to 30 secs)
The MAB8441-T005 was faulty (no longer available)
(Anonymous)
Thorn Video Model: VR414LVA
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
(Col)
Goldstar Video Model: P13I
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
(Col)
Goldstar Video Model: P13I
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
(Col)
Thorn Video Model: VR414LVA
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
(Col)
Jvc Video Model: HR-S4700EK
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
(Thunderdunc)
Firstline TV Model: 1433GR
Chopper secondary voltage (115V) was way too high (around 220V)
C615, Q605, Q606 and R308 had all died, The value of C607 (47uF) was out of range. Note: This set is equivalent to the Princess GT-1412
(Armando Valente)
Sony TV Model: KV-HF14M80 (BG-3S SSC-U21F Chassis)
Dead in standby mode, no primary voltages, led orange
Change uMICOM CXP86449-627S
(Brij)
Thomson TV (ICC17 Chassis)
Picture lacking in contrast and brightness
The symptoms suggested a beam limiter fault, replacing transistor TL02 (BF422) which was found to be leaky produced excellent pictures
(Kind Regards – LB)
Philips TV (L6.2 Chassis)
Power supply will not start up
Resistor 3506 (0.33 Ohms, 1w fusible) had failed, a replacement brought the set to life
(Kind Regards – LB)
Schneider TV Model: TV9
Line output transistor short circuit
Replacement did not clear the fault and the protection circuit was operating. C307 (0.047µF, 200V) was found to be o/c, when removed it had a bubble on the side, it’s part of a potential divider network (C306 & C307 in series, centre of which goes to the protect circuit), it is hard to get to being right by the line output transistor
(Kind Regards – LB)
Beko TV Model: 14.2
The +Ub voltage (+140V) was not present, fault in switching power supply
Transistor T601 (SK2545) had failed, replace/check resistor R602 (1Meg ohm) in switch control circuit, also if T601 is s/c the control chip TDA16846 will also be damaged
(Gordon w.Cox)
Sony TV Model: KV25K5U (FE1/FE1A Chassis)
No sound or vision, front led flashing
Replaced line output transistor, resoldered dry joints on driver transformer. Also check for any other poor joints in this section. Have used a 2SD1878 as replacement, This seems to work ok as the Sony original is very expensive
(A. Gould)
Sharp TV Model: 6GF63H (DA-50W Chassis)
Noise from speakers / center speaker even with the volume set at minimum
Replace IC1300 (BA4558F 8pin smd) and IC1302 (TDA7480) which are both located on the central speaker amplifier plug-in PCB
(J.C.)
Jvc Video Model: HRJ205
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
(Anonymous)
Normanse Spectra TV Model: 5207 (F11 Chassis)
Dead set, power supply ticking
R164 was found to be open circuit
(Anonymous)
Decca TV Model: D28NT92S (PT92 Chassis)
Dead set, no stby led
Check RP06 (3.9meg), RP05 (1meg) and RP07 (15R) in psu
(Anonymous)
Sanyo TV Model: Spectra 2000
Picture had only wide screen effect
Found set on the street ! beautiful little 14″ tv, still looks like new, replaced 33uF, 160v cap in power circuit as it was bleeding its guts onto the pcb, has worked perfectly ever since !
(Ronyec Andras – Montreal)
Teac TV Model: CT-M685 (ONWA Chassis)
Set stays in standby intermittantly or will int switch off to standby also brightness and contrast slightly low
Resolder all joints in the power supply (very small dry joints that need a microscope to find !) also check / replace replace capacitors C109 and C110 and check condition of other psu caps.
(Pappy)
Panasonic Video Model: NVJ30 (G-Deck)
Severe patterning of white streaks filling the screen in playback. E-E is ok
C1122 in the power supply unit. It is probably leaking its contents
(Rob Marshall)
Panasonic Video Model: NV-366
Front buttons (Play, FF etc.) don’t work
Caused by faulty remote control jack socket – this machine uses a wired remote
(Anonymous)
Matsui TV Model: 1420T
Dead set, P.S.U. not firing up
Resistor R511 (1.8M) open circuit
(Anonymous)
Salora TV(J Chassis)
Start up problems
Replace CB712 and CB726 in the power supply. Both are same value (4.7uF, 50V)
(Anonymous)
Goldstar TV Model: 20A80
No picture, FR406 ok
Check the video output amplifier stage for failure
(Zubair Almas)
Panasonic Video Model: NV870 (D1 Mechanism)
Noisy FM audio
Add a 0.01uF 50v ceramic capacitor between pin 9 of IC4509 and ground (only applies to units with serial numbers prior to D5K)
(Anonymous)
Panasonic Video Model: NV870 (D1 Mechanism)
Mode switch chatters
If it still does this with a new mode switch, check the serial number. If it’s prior to numbers beginning A5K… then add a 560 ohm resistor and a 50v 0.68uF electrolytic capacitor in series, between pin 2 of IC6002 and ground.
(Anonymous)
Panasonic Video Model: NVF70
No sound via SCART socket
Fit R4908 and R4910 on input/output pack, as they may be missing ! (Both 47 ohm)
(Anonymous)
Panasonic Video Model: NV730B (D1 Mechanism)
Video heads wear very quickly
Check the back tension if you haven’t done so already – it was set too high when manufactured.
(Anonymous)
Sony TV Model: KV2020
Picture is folded over at the top and curled at the top left hand side
Replace C559 and C560
(Anonymous)
Sony TV Model: KV1412
Noisy picture
Replace relay RY481 on S2 board
(Nigel Burton)
Sony TV Model: KV1412
Vertical line at the left of the picture
Replace L506 on A board, replacement part number 1-407-366-00
(Nigel Burton)
Sony TV Model: KV1412
Set reverts to standby mode when switched on, because IC003 does not reset correctly
Replace IC003 on A board, IC type CX523013P
(Nigel Burton)
Medion TV Model: MD7103VTS (11AK18 Chassis)
Power LED and Sound OK. EHT Voltage for 1 Second after switching on via Remote Control
Replace vertical deflection circuit IC605 (TDA8361) – don´t forget to apply Heat transfer compound !!
(Rainer)
Sony TV Model: KV28WS3 (AE3 Chassis)
No sound or picture, in protection after 2 seconds
No 6.5 Volt on G-board. Fuse resistor PS605 is broken on G-board. Cause: bad contacts
(Jan Post)
Philips TV (ANUBIS A-AC Chassis)
Low 95v rail, (35v)
C2530 open circuit completely
(P willis)
Panasonic TV Model: TX28W3 (EURO 1 Chassis)
At switch on a strange sound comes and goes for a few seconds, no sound and vision
Check R622, Q624 and T639
(Anonymous)
Grundig TV (CUC5310 Chassis)
Dead, no shorts found
Look for dry joints on the scan coil plug (may not be visable) also resolder the 12v and 5v regs
(Anonymous)
Sony TV Model: KV21GMR1 MkII
No raster, flyback squeeking
Check the damper diode, in my case it was leaky, also check the electrolytic capacitor connected from the collector of the pin out trans.
(Rams-Dumaguete)
Rca TV Model: F19220BK (CTC175L2 Chassis)
Erratic screen / intermittent, eprom causes multiple possible symptoms, clicks on/off, tuner, you name it !
Mass defect caused by bad solder in tuner, once fixed will probably last forever. Resolder tuner wrap-around groundings and all pins under tuner shield (bottom), if no success suspect a corrupted eprom
(Anonymous)
Sony TV Model: KV20TS20
Snowy or intermittent picture, makes popping sound
Solder all coils in stand up board and tuner
(Anonymous)
Philips TV (A10E Chassis)
Randomly switching to scart input when the programme output from the tuner should be displayed
This is now becoming a common problem, the cause being the painter chip IC7064 which is located on the small signals panel, there are 8 different versions but only 3 common versions
(Anonymous)
Schneider TV Model: DTV2
Shuts off after 20 minutes or so
Dry joint on FBT
(Chris Prestwich)
Sony TV Model: KV-M21TU (AE1 Chassis)
Intermittent rolling and loss of luminance, improves as set warms up
Dry joints on tuner / IF board
(Thunderdunc)
Sony TV Model: KV-21FS100 (BA6 Chassis)
No power, R640 open
Change R640, IC600 and associated electrolytic capacitor
(Iván Meléndez)
Philips TV-Vid Combi Model: Televideo
No vcr transport functions via remote
This is the symptom when the remote control has switched from the correct VCR1 mode to the VCR2 mode (usually due to low battery voltage or the batteries being replaced), to rectify the situation hold both the stop button and button 1 together for 5 seconds, alternatively for different remote versions holding the stop button and button 2 together for 5 seconds will rectify the problem
(Josh)
Toshiba TV Model: CF3060K
Problems with screen size
Look out for 2 x 2.2uF electrolytics (sometimes red in color)
(Anonymous)
Daewoo TV-Vid Combi Model: DVT-1482P (CP310 Chassis)
Totally dead except for a few rapid flashes from the green led at switch on
C811 a 100uF, 16v capacitor in the power supply was the cause, it is located next to the chopper transistor’s heatsink. This is the same TV/Video as the Goodmans TVC14VP
(Rob Marshall)
Panasonic Video Model: NV-HD675 (Z-Mech Chassis)
Intermittently shutting down with HO1 in display
Problem can be caused by stator board VEK9017 but in this case the problem was the upper drum assy! The bearings seize up when warm!
(E.T. Sandy)
Sanyo TV Model: CEP3011V-30 (A1-B14 Chassis)
After switching on, no longer able to switch-off with remote control, standby light comes on with sound muted. (Original remote control: RM-700)
Opto-coupler PC113 faulty
(Esohe)
Ge TV Model: PTK195AA (PTK195 Chassis)
Works fine for 10 or 15 min. (or sometimes 1 or 2 days) then bows from top and loses convergence
Replace the STK730-130, located on small board above the convergence module
(Clonch tv)
Lenco TV Model: 14P1MNA
Standby only
Check R101 (4.7ohm), TR102 (C6180) and C126 (47uF, 16V)
(Akalipt)
Sony TV Model: KV-M1400 (BE2A Chassis)
Insuficient vertical deflection. Line rolling on top of picture
Replace ceramic capacitor C524
(Pm)
Tandberg / Seleco / Sinudyne TV Model: 3TS645 (PC170 Chassis)
No vertical scan, just one bright line in the middle
Suspect R235 (18kohm), in some cases the TDA3654 may also have failed
(Jonnykvist)
Grundig TV Model: M70-490/9 TEXT (CUC3800 Chassis)
No sound, picture ok
When shifting up the channel frequency using the fine tuning, a very weak sound could be heard. Replaced the sound IF demodulator chip U2829B(IC2110)
(Rui Loureiro – Portugal)
Sanyo TV Model: CEP2190M
No sound
IC901 (TDA4935) blown due to excessive supply voltage, capacitors C619, C623, C810, C600, C601, C859 defective. Also verify R822
(Jeroni Paul)
Jvc TV Model: AV25S1EK
Field collapse
Resolder TDA3654 as joints appear good but on application of soldering iron show to be dry
(Pj)
Mitsubishi TV Model: CS40503
Sometimes will not power up, missing 15 volt standby
Replaced D982 and C982, both leaky
(Kami)
Sony TV Model: KV24FS100
Will not power, led blinking
check R640 (1K 1/4w) if open replace ic600 (8-759-670-30)
(Kami)
Schneider TV Model: STV630UK
Only half a screen of frame scan
Replace IC401 (TDA8177F). If any blanking problems occur after chip replacement, check R327 (1ohm) next to IC401
(Anonymous)
Sharp TV Model: DV6632H (4BS-C Chassis)
Led changes from green to red, fails to start up, no EHT but secondary voltages in psu ok (150V ok)
Check Q601 and Q606, these are Q600 LOPT drivers, there should be 2V P-P on base of Q606 and 150V on collector of Q601, replace Q606 with a BC182 (check pinout)
(Steve May)
Matsui TV Model: 25M3
Failure to start up, led pulses
Check for dry joints on R541 and D436 located next to L.O.P.T
(Niall)
Proline TV Model: 28N1 (F19 Chassis)
Procedure to invoke service mode
I have used this method and it works (supplied from the makers manual). With tv off, hold vol up button on tv, switch tv on and keep holding vol up button whilst pressing standby on remote (this must be done within 4 secs of switch on) at no time let vol go
(Steve Taylor)
Sharp TV Model: DV7045SN
No vertical deflection
R615 open (0.13 ohm 1/2W). Also resoldered many bad solder joints
(Jeroni Paul)
Jvc Video Model: HRD750
Tracking does not lock. Picture runs up and down occasionally
(Very) Small electrolytic caps on the drum circuit board must changed (They may be the bigger can type, if you don’t find small ones)
(Lassi Uuu)
Toshiba TV Model: 175T9B
Line tearing and incorrect field lock when cold
47uF electrolytic AGC decoupling capacitor inside tuner/if unit
(Colin fairfield tv)
Philips TV-Vid Combi Model: 14TVCR240
Poor tape transport, tape is crumpled, upper or lower side gets rippled
Replace the capstan roller, if the tape transport is still not smooth check the guidepole (between the audio/control head and the capstan), tape must touch border-ring. Adjust the audio head position (screws marked A and T)
(Anonymous)
Bluesky TV Model: TDX-70 (11AK19 Chassis)
HT low / missing
Q608 (BU2508) dead (short-circuited). Needed replacement. That’s all…
(Anonymous)
Panasonic TV Model: TC2195DRS (Z3T Chassis)
SMPS noise. Low volt and high current on Usyst, no screen or sound
FBT TLF15606F
(Anonymous)
Irradio TV Model: MC-FBC-006
Dead, i.c. oscillating (may start if i.c. heated)
Check / replace R602 (2.2M, 1/2w)
(Anonymous)
Sony TV (FE-1 Chassis)
Procedure to return EEPROM to factory default settings
Select programme 59, enter the service mode and at the TT– prompt enter 49 then 24 (for UK)and 08 then switch off at the mains
(Anonymous)
Sony TV (FE-1 Chassis)
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
(Josh)
Sony TV Model: KV-E2543E
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especialy the one very close to plastic frame
(Jose Carlos Pinto – Oporto)
Toshiba TV Model: 2505DB
Stretched frame or frame collapse
Replace modification diode 570 on copper side
(Anonymous)
Hitachi TV Model: C2846TN (311 Chassis)
Frame collapse or dotted line
Check and replace frame ic (TA8427K) or check R710 for open circuit, also check for possible dry joints on D601
(Jimmy n)
Sony TV Model: KV-A2923
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
(Anonymous)
Hitachi TV Model: C1714T
Frame collapse, causing set to go dead, also can cause the regulator transistor, to go s/c. BUT12AF. H.T. unstable
Check R951 (39K) goes high, in this case 65K, causing HT to go high
(G3xxr)
Philips TV (GR2.1 AA Chassis)
Poor picture quality from CVBS EXT1 and EXT3. Low intensity high saturation. Loss of sync. Shock and temp dependent
Dry joints on SMD resistors 3014 and 3019 on IF/Sound module other side of encapsulated TDA2549
(Choc’s maker.)
Sony TV Model: KV-A2923
Standby led blinks slowly, a few times, chassis won’t start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok !
(Anonymous)
Sony TV Model: KV21M1D
Picture disapears a moment after changing program. Raster/OSD ok
Replace TDA9806 ic
(Apostol)
Goldstar TV Model: CBT-9745 (PC91A Chassis)
Attempts to start up. When main switch is pushed ON, relay coupling and decoupling (on-off, on-off)
Replace: C805 (47uF, 50V) next to the TDA4605 and C801 (1uF, 50V)
(Zoran)
Goldstar TV Model: CBT-9745 (PC91A Chassis)
TV dead. PSU ok, led lit. When button pushed on remote the LED goes out but set does not start (Missing HF voltage)
Replace: C417 (1uF, 250V) Elko for HF oscill. (next to HF trafo)
(Zoran)
Philips TV (FL1.1AA Chassis)
Int shutdown with lights flashing
Check the 18v zener D6376
(Anonymous)
Philips TV Model: 20PV164-05
Vertical frame collapse
Change vertical output drive IC and nearby electrolytic capacitor
(Bugtom)
Nokia TV (FX Chassis)
Left part of picture missing after fitting vertical modification kit
Make sure you have fitted the extra capacitor between pins 8 and 9, instead of 10 and 9. Fitting incorrectly will destroy the sandcastle pulse and make the picture appear strange
(Kalle Birgersson, Sweden)
Nei TV (CE25 Chassis)
Dead – PSU clicking
Dry joints on D116 and C131 causing blown BU508A
(Andy Fraser)
Grundig TV (CUC5310 Chassis)
Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
(Kalle Birgersson, Sweden)
Schneider TV Model: STV630UK
Frame Collapse
Replace IC401 (TDA8177F) and resistors R325, R326, R327
(Jim Ross)
Matsui TV-Vid Combi Model: TVR185
Int sound
Check voltage on sound IC, if it drops with high volume change C620 (1000uF, 25 vdc)
(Arl)
Sharp TV Model: 66GF-63H
Blank grey raster with flyback lines,sound present and ok
Check pin 2 on connector H on tube base for 12V if high then check Q912 (BC337) for o/c
(David Mclellan)
Sony TV Model: KF60XBR800
No picture no sound timer light flash 44 fast 45 then 5 times then 5 times
Replace power block part # 1-468-510-11
(Mervin)
Toshiba TV Model: 198X6M
Horizontal output continues to short
Check capacitors C403 and C408 (both 50v) these two caps tend to change capacitance
(Aze – Philippines)
Philips TV Model: 28PW6005 (A10 Chassis)
Changes to ext 1 when watching tv (ok with video input)
Painter ic IC7064 failed on the ssb (small signals board)
(Anonymous)
Philips Video Model: Turbo Deck
Chews tapes and poor tracking
Fit new pinch roller
(Cee dees)
Thomson TV Model: RP46
East-west and north-south bowing. Really bad convergence
The extra power supply is not working. Check R18 on primary side. It should read 220Kohm
(Kalle, Sweden)
B and O TV Model: LX5500
Sound disappears from time to time
If there is sound all the time via scart, but problem with both mono and stereo via tuner, check R137. It is a 4k7 pot on the tuner board
(Kalle, Sweden)
Rca TV Model: F27442 (CTC203AD5 Chassis)
No power, all standby voltages ok
Replace the guide plus. is located to the side of the tuner
(Fher)
Philips Video Model: VR678
Reel brakes not operating
Due to broken plastic pivot for pulse slider (item 110) mounted on chassis (does not look like replacement part but wve stock holder, pulse mech kit Pt no. 16256HL)
(Anonymous)
Bush TV Model: 2071NTX (11AK19 Chassis)
Black screen from tuner but OSD (menus and channel no.), teletext and sound work normally
Q500 and Q504 blown, replacement cured fault. Removing R508 also restored picture. Fault puts TDA8840 in RGB insertion mode continuously, so separated RGB input might still work
(Joe Kelleher)
Magnavox TV Model: RP2781 C101 (27X105-00AA Chassis)
No vertical deflection
If resistor R445 (1ohm) has gone open circuit this may cause IC550 (LA783x) to also fail. Replaced both IC550 and R445
(Daniel)
Sony TV (FE-1 Chassis)
Procedure to display past error codes and the number of times they have occured (particulary useful for ongoing intermittent faults)
Enter the standby mode then press the on-screen display button (i+), 5, volume down, and finally the tv button. Note: the error count can be reset by pressing 8 then 0 on the remote control
(Josh)
Sony TV (FE-1 Chassis)
Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !
(Josh)
Philips TV Model: 33SL5796/16B (FL 1.0 Chassis)
Snowy picture specially in VHF band. After about 5 minutes, picture snowy in all bands. About 10 minutes after switching on, no picture nor sound, just snow on the screen
Replaced the TUNER/IF. Original code was FQ816ME which is no longer in production. Replacement code is FQ916DME
(Rui Loureiro – Portugal)
Sony TV Model: KV-21RXR1
Excessive brightness/ brightness control reverses its function
When setting brightness to minimum the pic became very bright, setting to maximum the picture became dark ! Found that R301 (270k ohms) near the jungle IC was o/c
(Aze)
Philips Video Model: VR6448 (20921 Chassis)
Mechanism jammed, some posts hard to turn
Grease has turned into cement!! Oil most of the moving parts, and move them to ensure oil penetrates
(Anonymous)
Universum TV (11AK19 Chassis)
Narrow Picture
After resoldering joints in the line output stage, check R629 (27ohms, 1/2w) safety resistor to E/W FET, also o/c capacitor C630 (0.47, 250volts). According to the schematic R629 is 2.7 ohms
(Conrad626)
Philips TV Model: 14PV220 (EPSILON 2001 Chassis)
Dead (Totally)
SMPS Chopper IC 7310 (MC44608 P75). I had no output from pin 5 with start up voltage pin 8 OK at 290V. If start up missing check start up resistor 3335 (1K). The only source I found for IC 7310 was Philips direct, part number 9322-143-51682, cost ~ £10
(Paul van gelder)
Philips TV Model: 21GR2751 (G90B Chassis)
Stereo set with no sound off air, maximum volume produces low hiss, some sound possible if station is detuned slightly. Sound via SCART is ok
Replace IC U2829B on audion panel
(Bill)
Nordmende TV Model: GALAXY 55 (ICC8 Chassis)
Dull picture
Replace (TT33) on tube base
(B goan)
Nordmende TV Model: GALAXY 55 (ICC8 Chassis)
Not tuning into channel
33v missing (RH040) o/c
(B goan)
Telefunken TV Model: PALCOLOR F531 (ICC9 Chassis)
Stand-by led flash but set does not start
Replace: TL19 (BUH517), DL21 and DL22, CL21 and CL22
(Anonymous)
Orion TV Model: TV2501B
Dead set or will start up and shut down
IRD shorted or leaky
(Clonch tv)
Sony TV Model: KV2062
Dark picture, No brightness control
1000V+ Missing caused by open circuit IK resistor Near to FBT
(Imran Khan)
Sony TV Model: KVFX29 (FX Chassis)
White horizontal line (no vertical deflection)
Check / replace R548, R549
(Fabio)
Goldstar TV Model: CB20A86
Dead, F801 blown
Check short circuit PTC coil (Degauss) short Diode on main Cap+ Check for failure of regulator IC801 (STR5707), Also check H.output D1651 for short circuit
(Imran Khan)
Toshiba TV Model: 32ZD09G (C00S Chassis)
Procedure to enter the service mode
Press the mute key on the handset once, then press the mute key for a second time but hold it down while also pressing the menu button on the set
(Josh)
Schaub Lorenz TV Model: DS2 (DTV2 Chassis)
Procedure to enter service mode
Press and hold service button on PCB inside TV. Press `C` on remote. Press program no. where your test picture is, You are now in service mode
(Anonymous)
Akai Video Model: VSG2DPL
Tape loading carrage is very loose and sloppy will not load and eject tape properly
Mode switch is faulty, out of alignment or has a bad connection back to the PCB. This switch is located underneath the tape drive mechanism
(Anonymous)
Samsung TV Model: CB7230WT
Power supply flutters and standby light dims out
Replace mains filter capacitor (220uF 400v), also make sure the 4 capacitors in the primary are replaced (if they havent already been)
(Anonymous)
Samsung TV Model: CB7230WT
Vertical failure (common fault)
The reason for the failure is because the yoke is low impedance. The TDA3654Q i.c. has been designed to handle 12 ohms and over. Heat is the reason it destroys itself, the best cure is to place a small cpu fan on the heatsink
(Anonymous)
Philips TV Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
After replacing the line output transformer, the following sympton was displayed. Display flashing standby light and stereo II
Short s23 and s24 briefly, which will put the set into service mode. Option 1 should read 010 this applies only to the 25FL and 29FL. Option 2 should be 001 for sets with text and 004 for sets without text
(John Carey)
Jvc TV Model: AV28WZ2
Blank raster
Replace defective TDA6111Q for Red, Blue and green
(Rens van der enden)
Thomson TV Model: 28VK-44E
No start-up when cold, warm OK
Changes CP198 (47uF, 16v). Secondary Power supply
(Rens van der enden)
Philips TV Model: 14PV184
Dead set / blown fuse
Replace D6313, 6314, 6315, 6316 and R3337 (2R, 5W)
(Skyprobe)
Panasonic TV Model: TX21AD2DP
Stuck in standby but tripping, not the usual nvm problem and nothing s/c
Check and replace C804 (1uF, 25V), C806, C807 (100uF/50V) in supply. Use 105 degrees cap. types
(Rob’s TV-service – Holland)
Philips TV Model: 25FL1760 (FL1 Chassis)
Set tries to go to stereo as indicated by the on screen display, but most of the time it is stuck in mono, when in stereo the right channel was hissing
Replace the TDA8415 on the stereo decoder board, confirm this buy putting multimeter on pin 7 and 8, they should have a voltage of 3.2 volts
(Cannny)
Philips TV Model: 29FL1770 or 25FL1760 (FL1 Chassis)
No pictures or sound
Disconnect the P1 and P2 plugs on the right hand side board. L.o.p.t. side. If the set now starts up then change all sound output IC’s
(Cannny)
Philips TV Model: 29FL1770 or 25FL1760 (FL1 Chassis)
When selecting a channel it locks in initially but will then go off tune (as if the voltage tuning had varied)
Replaced the TDA i.c. in the tuner i.f. section. (tried the capacitors first of course).
(Cannny)
Philips TV Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
Lights flashing at the front, if carefully interpreted they point to the primary of the power supply
Replaced 2SB 3795B chopper transistor, heated the heatsink with a hair dryer and it started right up, weird as the transistor was reading fine
(Cannny)
Decca TV Model: D20RDE6 (D Series Chassis)
No luminance(looks negative picture)
We spent over 2 hours on this set and in the end we swapped the chassis with a scrap chassis and the fault remained ! It turned out the fault was with the CRT
(Anonymous)
Samsung TV Model: 20A5
Partial field collapse
Check IC301 (TDA8350Q) and the 2 associated unmarked capacitors (10uF and 100uF, 63v) and the 10ohms,5w ceramic resistor across pins 3/5 of the above chip
(Anonymous)
Sylvania TV Model: SRT2127ST
TV will not start up, fuses ok
Change IC601
(Paul Niswanger)
Panasonic Video Model: NVJ45 (G DECK Chassis)
Appeared to be dead (like C1110 1uF, 400)
Found C1125 and C1130 (680uF, 20v) leaking onto pcb. Remove sm.tx and clean board
(E.t.sandy)
Orion TV Model: TV2501B
Dead set
Found the IRD shorted
(Anonymous)
Telefunken TV Model: Palcolor S540C (ICC9 Chassis)
Geen blauwe kleur
SMD transistor TV81 (Bc858) defect.
(Anonymous)
Blaupunkt TV Model: MS70-79VT (FM500-70 Chassis)
Horizontale gekartelde stoorpatronen in ‘t beeld ‘t eerste uur.
Cond. C542 slecht
(Digneffe Roger)
Samsung TV/Video Combi Model: VM3105
No video, no audio. High pitch sound from power supply.
Replaced blown fuseable resistor R417 (1 ohm, 1/2 watt)
(Angel Torres)
Bush TV Model: WS6690D (11AK19 Chassis)
At switch on front l.e.d turns green, blinks twice then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
33 ohm resistor feeding standby 5V reg was high (8 ohms – not shown cct diagram), in my case D605 on the 45 volt supply from the LOPT was faulty, although it measured o.k
(Supadan)
Thomson TV (TX807 Chassis)
Plain raster, retrace lines, no sound
Problem in vif board, Resistor 68 ohms to +b supply line 12V
(Guruji)
Ferguson TV Model: 626R (TX807 Chassis)
(H)VTU Tension de sintonia 99v pero en el zener DH01 (ZTK33A) hay 22v.
Sustituir zener 33v (ZTK33A)
(Eisi)
Hitachi TV Model: C2146TN
Dead / int, led lit
Check the 5v regulator IC952, 8v regulator IC951, standby regulator IC950 and the field output chip (TA8427K) or for dry joints on the regulators
(Anonymous)
Nordmende TV Model: F20-9 (ICC7 Chassis)
No colour
Check IV01 (TA8659) or IE50 (TEA2114)
(Anonymous)
Goodmans TV Model: 2029T
Blank raster with no sound (eht & tube heaters present)
ZD401 s/c. Also take a look at R419. This set had been left on and R419 had cooked, it’s value went to 20K
(Terry)
Sony TV Model: KVG25M1
Dead
Found Q802 (C4927) short, replace with same type as no other types last
(Seles)
Panasonic TV Model: TX-2470
Cogging on vertical elements of picture, p.s.u squealing
Replaced C808 (10uF, 50V) It had gone low in value
(David Roberts)
Panasonic TV Model: TX21V1 (Alpha 2 Chassis)
Bright red raster with flyback lines,shutting down after about 30 seconds with squealing from power supply
The fault was due to the supply choke to the red output stage on the tube base panel being O/C, I can only assume the shut down was due to excessive beam current, a long soak test proved all was now ok
(Thunderdunc)
Philips TV Model: 20PT3742
Dead with LED blinking 4 times
The vertical output IC. is short circuit
(Imran)
Panasonic Video Model: NVG30
Operates for about half hour to an hour and shuts down
Capstan IC located on the underside of main PCB was dry jointed due to exessive heat. Remove and discard plastic cover and apply fresh solder removing old. Also refresh heatsink compound.(I’ll try extending the heatsink too)
(Farouk)
Ferguson TV Model: M8422U (ICC17 Chassis)
LED flashes once the 6 times then goes to standby
Replace LOPT
(Gordon )
Philips TV (L6.3 Chassis)
Failure of fusible resistors R3929 and R3930 (both 560R)
Unfortunately when these blow it is a sure symptom of LOPTX failure. When replacing these resistors, check the big blue 470nF, 250V capacitor behind them for signs of heat damage and replace if necessary, to avoid a recall (With resistors gone again!)
(Rob Hancock)
Aiwa TV Model: VXT1400
When switching to STBY raster remains and buzz noise is heared from the speakers
Cause: +B voltage (103 V) does not switch-off. Remedy: Replace defective C541
(Vitaly)
Schneider TV Model: STV515
No sound, no picture (dark screen)
This was due to IC101 (VCU2133)
(Anonymous)
Akai TV Model: TV2034
Appears to be stuck in standby with the front led flashing and the h.t. at about half the correct voltage
This set led me a merry dance until i discovered the set was actually in the child lock mode !! The problem was solved once this was disabled using the remote control
(Josh)
Sharp TV Model: 51DT-25H
NVM modification / symptoms such as no video, tuning drift & reduced height from cold
Fit 2 zener diodes (part no. RH-EX0404BM22) in positions D510 and D511, fit coil (part no. VP-CF120K0000) in place of link J122 and fit zener diode (part no. RH-EX0412BMZZ) in position D403
(Josh)
Beko TV Model: 12.8
The +Ub voltage (+118V) was not present, fault in switching power supply
Transistor T901 (SK2545 or P3NB60FP) had failed. Replace it and check C908 (22uF, 35V) replace it with 22uF, 50V. Also C912 (1uF, 25V) replace it with 1uF, 50V and D906 (1N4148) always replace it with 1N4948T
(Jo)
Philips PLASMA TV Model: 42FD9954 (S FM24 Chassis)
Green dots flashing over the screen in AV mode
Change resistor value R3641 from 1K to 100ohm
(Ab)
Beko TV Model: 12.8
No audio
Check and replace ic101 with STV2246C and check and replace c135 (100uF, 16V) replace it with a 220uF, 50V. Also check and replace C308 (470uF, 16V) replace it with a 470uF, 50V
(Jo)
Beko TV Model: 12.8
Red or Green or Blue screen
Check and replace on crt module : D702, D703, D704 (all 1N4148) replace with type 1N4948T
(Jo)
Toshiba Video Model: V642UK
VCR is locked out, no sound, noise picture and front panel buttons do not work. NVRAM has been lost
Access the NVRAM menu. On remote hold A-Dub button for 10secs, VCR display will read TEST, then hold the menu button until the NVRAM menu is displayed on screen. I do not know the codes for this model, if anyone knows them please pass them on!
(James)
Philips TV Model: 24PW6005 (A10E Chassis)
Intermittent or no sound, mute transistor not switching on, ref 7701.
Possible software problem! replace micro. Circuit ref 7064 part no 3111 250 545 11. If thats too expensive then try fitting a 22k resistor collector to base of transistor 7701 in mute circuit!
(Phil)
Sharp TV Model: 37DT-25S
Dead, fuse ok
Replace Q701 (P3NA80FI) with a P4NB80FI-mbr. Check Q702 (BC338). Replace R703 (5,6E, 5W), all components in supply. Check print for poor contacts
(Rob’s tv-service – Holland)
Panasonic Video (K Deck Chassis)
Procedure to display fault codes
Press FF, REW and EJECT simultaneously OR where a Shuttle Dial exists press EJECT and CUE Forward
(Anonymous)
Philips Video Model: VR6264
No video or RF output. 12.3Vd.c. rail from 7002 (BD678) dead
Fault traced to dead short component located on PCB502 at componet ref no. 2024 (Philips blue radial capacitor 330uF, 16V). Philips part number 4822 124 40849. Cap has markings 036K0 T0 on it. Replaced and all sprang into life ok
(Andrew Finch)
Continental TV Model: CE3701 (Grundig G1000 Chassis)
Note on obtaining a replacment remote
If you try to get a replacment remote no one will recognise it but the Grundig G1000 RC1/2/4, will work fine
(Arl)
Alba TV Model: CTV4809
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok
(Errol Rankin)
Goodmans Video Model: VP2500
Video keeps spitting out tape
Re-align video deck, clean dirty heads etc, all now ok with vcr
(Errol Rankin)
Sony TV Model: KVX2952U (AEIC Chassis)
Int black and white picture, colour disappears
Replaced IC TDA4580 and all ok
(Errol Rankin)
Sony TV Model: KVX2972U
On/Off switch popping out when pressed
On/Off switch push pad broken, repaired push pad and switch now ok
(Errol Rankin)
Ferguson TV Model: 59K7 (ICC5 Chassis)
Severe vertical jitter on picture, horizontal sides of picture ragged
Replacing the TDA4950 cured the fault
(Errol Rankin)
Jvc TV Model: C14E1EK
Tuning drift,worse at high channel no’s
Dry joints inside tuner unit, connections between edge of pcb and lugs
(E.T.Sandy)
Thomson TV Model: 24WK25US (ICC17 Chassis)
No/Low contrast after EHT flashover
Check/replace TL02 and TL59 in the beam limiter circuit
(Mick Pope)
Sony TV Model: KVJ29MN21
Unable to switch on with remote and no LED display at the front of set
Due to STBY 5v missing. Checked and found the 5v reg/reset IC002. (L78LR05D) was s/c, replace the IC to clear the fault
(Anonymous)
Philips TV Model: 25PT4103 (L6.2 Chassis)
Blank screen no audio. No results from tuner or SCART socket. When G2 on LOPT is wound up a red line is visible
Check R3438 (3R3). In my case this was o/c and a replacement restored normal opperation
(Paul Godfrey)
Grundig TV Model: T55-640 (CUC 6300 Chassis)
Sleep timer box on screen, remote & front buttons not working
Changed the EEPROM IC847 (24C04)
(Urhoej)
Akura TV Model: AP2821-S
Dead
Replace RP05 (1 meg, 1/4 watt)
(Darren)
Toshiba TV Model: 2573
Stuck in standby.
Replaced ZP82 (o/c) And tuner (internal short)
(David Roberts)
Toshiba TV Model: 28WD98B
Stuck in standby, 16 volt line low at approx 8 volts
Replaced C872 (220uF, 50v), original had gone low in value
(David Roberts)
Bush TV Model: 28ZKF
TV seems to be dead apart from the front leds
On main board check Ntype TX BD441 which is clipped to the main heat sink. The clip can come loose causing the TX to overheat and melt its connections to the CB. Remove TX test and if OK solder back on making sure TX has good connection to the heatsink
(Anonymous)
Goodmans TV Model: 285NS
Buzz on sound when volume at low level
Dry joints on earth pegs of heatsinks of audio and frame output ICs – confirmed by comet service, long time ago!
(Steve)
Vestel TV (11AK19 Chassis)
Screen blanked out,with 4 coloured lines two thirds of the way down from the top of pic. Sound OK
R704 (100 ohm resistor) connected to pin 6 of the frame output chip was o/c
(Anonymous)
Philips TV Model: 28PW6332/05
Loud bang internally, then completely dead. Plug fuse ok. Set about 4 years old
Internal 4A fuse blown. Bang was 330pF cap 2540 across PSU MOSFET exploding, suspect went s/c. Diodes 6513 & 6511 cracked and s/c. Replaced C2540. Could not get diode 1N5062/BYW55 rep, so replaced all 4 diodes with BY399. PSU MOSFET removed and checked,ok. Voila
(Andrew Wilson)
Panasonic TV-Vid Combi Model: TX-14/21GV1
No operation, standby led blinking
Replaced C840 (47uF, 25v) which had gone low in value
(David Roberts)
Lg TV Model: CF-28A50T (PC-58A Chassis)
Flyback lines on pic
Check resistor R351 in front of TDA8350Q. It should be 3.6 K. I replaced with 3.8 K and it worked fine. Additionaly check: R708, FR704, FR359, Q351, Q345. If fault persists try replacing the TDA8350Q
(Nikita – Germany)
Ferguson TV (ICC17 Chassis)
Dead Set
Check DP21, 39V Zener, in the startup circuit
(Anonymous)
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
(Josh)
Panasonic TV Model: TX28DK2 (EURO 4 Chassis)
No surround sound
As Mark said in a fault on the Euro 4 chassis, Replace the TDA2030.
On this model there are three TDA2030 s. If you have to replace any also as a matter of course replace the two regulators Q2701 and Q2702 or the chances are the TDA s wont last long
(Anonymous)
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
(Josh)
Sony TV (FE-1 Chassis)
No sound
This may be remedied by entering TT24 in the service mode, if fault persists Q202 (2SC2412K) could be leaky
(Josh)
Sony TV (FE-1 Chassis)
Pressing the screen format button displays wide, smart, zoom and 4:3 modes but settings have no effect on picure
Enter TT35 in the service mode to select a 4:3 CRT
(Josh)
Sony TV (FE-1 Chassis)
Purple line down picture
Replace IC301 (CXA2060AS), part no. 8-752-082-35
(Josh)
Sony TV-Vid Combi Model: KV-20VM20 (SCC-H16B-A Chassis)
Would not eject the tape
Replace Elevator activator rack (Broken) REF# A34 OEM# 9-908-164-01. – UL# 146T – Set MFG. by Goldstar Similar To: Zenith TVR1920 & KV-13VM20
(Don Hutcheson’s tv service center)
Imerial TV Model: 36M92 (11AK03 Chassis)
Tv stays in stand-by when the power is swiched on. No response from the remote or any button on the set
R603 (3.9Kohm, 5W) was o/c
(Patje – Belgium)
Luxor TV Model: MP63P1 (6362-71 Chassis)
Totaly dead without any signs of life!
Flyback transitor failed (S2000AF)
(Jonnyk)
Philips TV (A10E Chassis)
F on top righthand of screen then loss of geometery data and int shutdown, unable to restart but when try do so set cuts out
Painter IC failure, A small 100 leg device a joy to change if you have the right gear ! Ref IC7064 also updated software on new IC
(Christv)
Samsung TV Model: CT566 (K51A Chassis)
No power
Voltage not changing on pin 18 IC901 (SZM-368ET2)
(Anonymous)
No comments:
Post a Comment
WhatsApp +923139292880
Note: Only a member of this blog may post a comment.