Samsung PN43D450A2DXZA Panel Repairs

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Sony LCD LED Repair Tips

Model: SONY KDL32S2010E Chassis WAX2 LCD TV
Symptom: Switches to standby for a short while, then back again.
Repair/Solution:
Replace standby push button on user control, has contact resistance.


Model: Sony KDL32U2000 Chassis SE1 LCD TV
Symptom: No Picture.
Repair/Solution:
Check SMD fuse CP101P on T-CON board. The T-CON board is behind the
BDT board


Model: SONY KDL40U2000 with SE1 Chassis LCD TV
Symptom: No start-up, red LED light flashes 3 times.
Repair/Solution:
TV has slow start-up before this symptom occurred. When check standby 5v ok
and PSU is heat sensitive. Check and replace the C6055 (47uf/25v) in G2
supply it will solve the problem.


Model: SONY KDL40U2000 LCD TV
Symptom: Error codes 4
LED light turns green, flashes 4 times then goes green again and flashes 4 times
again. Fuse (500mA) on inverter panel is open circuit.
Repair/Solution:
Replace the fuse on inverter board.


Model: SONY KLV26U2520 Chassis SE1 LCD TV
Symptom: No picture but sound ok.
Repair/Solution:
Check SMD fuse CP101P on LVDS panel (T-CON).


Model: Sony KDL32U2000 Chassis SE1 LCD TV
Symptom: Stuck in standby. Standby LED light is green.
Red LED light flashes 3 times. No remote control or front panel functions.
Repair/Solution:
Check or replace D301 zener diode (can be use a 5v zener diode) for short
circuit.

Sony KDL-32EX301 KDL-32EX500 KDL-46EX400 KDL-32EX400 KDL-40EX500 KDL-46EX500 KDL-40EX400 KDL-40EX501 KDL-46EX501 KDL-40EX401
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Protection Mode Symptom Troubleshooting

The KDL-32S5100 and KDL-32XBR9 include the following protection mode blink patterns (or self-diagnostics).

[All red protection mode LED blink patterns occur using the Standby-LED at the lower left front of the TV.]

Failure Symptoms: 2X Blink - Main Power Error

A 2X protection mode blink pattern can be activated due one of the following defects on the G2LE-Board, G2HE, GD2-Board..
Loss of AU12V (LVP)#
Excessive AU12V Level (OVP)#

Excessive 24V Level (OVP) (32” & 40” models)
Excessive PFC Voltage (OVP)
Excessive PFC Temperature (OTP)
# Low Voltage Protection (LVP)
# Over Voltage Protection (OVP)

A loss or excessive condition of the AU12Vdc secondary voltage from the main power supply IC6501 will cause a 2X blink pattern on the StandbyLED. The 12Vdc can be checked at CN6401/pin 4. The If the measurement is 0V or rises above 12Vdc (approaches 15V) before the TV shutdown the G2LE-Board, G2LE, GD2-Board is defective.  If approximately 12Vdc is present and remains below 12Vdc before shutoff then the A-Board is defective.  An excessive 24Vdc (32” & 40” models) secondary voltage from the main power supply IC6501 will also cause a 2X blink pattern on the StandbyLED. The 24Vdc can be measured at CN6402/pin 3 before TV shutdown.  If the voltage rises above the 24V level (approaches 27) before TV shutdown then the power supply is defective, replace the G2LE, G2HE , GD2-Board to fix the problem. 

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Finally, there are PFC protection circuits on the power supply board that when activated will cause a 2X blink protection mode. The PFC circuit is monitor for both over-voltage and over-temperature. Therefore, if the AU12V and 24V circuits checkout okay, there could still be a problem on the power supply board in the PFC circuit causing the 2X blink. Replace the G2LE, G2HE, GD2-Board to fix this condition.

3X Blink- Audio Error

The Audio error can occur due one of the following error conditions.

Shorted or Damaged Speaker Connections

Defective Audio Amplifier (A-Board)

Loss of AU12V (Open F1 on A-Board)

The first thing to check when a 3X blink protection mode occurs is the physical condition of the speakers and speaker connections. The speakers should measure 8 ohms. Shorted speakers or connections can cause a 3X blink protection mode.  If the speakers and connections check okay, then the defective component is on the A-Board. Either a open F1 or defective audio amplifier will cause a 3X blink protection mode. In either case, replace the A-Board to fix this condition.

LED Blinking Codes

4X Blink - Balancer Failure (46” Models ONLY)
In most cases, a 4X protection mode indicates a defective lamp or lamps.  Therefore, replace the LCD panel to fix this condition. If the 4X protection is still present after replacing the LCD panel, there could be a problem on the A-Board or GD2-Board. First replace the A-Board then the GD2- Board.

5X Blink - TCON & HFR Failure
The 5X blink protection mode indicates a communications error between the TCON/HFR board and the MT5388 microprocessor on the A-Board.  First replace the TCON/HFR Board if the 5X protection mode blink pattern occurs. If the TCON/HFR Board does not repair the problem then replace the A-Board.

6X Blink - Backlight System Failure (32” & 40” Models)

Main Cause Backlight Problem
NOTE: All models will make three attempts to power up before a 6X error is activated. The SONY logo (Backlight) will display on the screen and the tones (with Volume up) will be heard three times. After the third attempt the TV will turn off and the Standby LED will blink a 3X protection mode.  In most cases, if the backlight momentarily illuminates and the TV shuts off and a 6X is activated than one or more of the backlight lamps are defective. The LCD Panel assembly panel must be replaced for a defective lamp.  If a 6X blink pattern is activated than a defect has occurred in one of the following areas.

Defective Panel Lamp(s)
Defective Backlight Inverter Board
Defective TV Microprocessor
Defective 24V Power Supply
When troubleshooting a 6X backlight system failure it is key to notice if the backlights illuminate before the TV shuts off. The following list shows the possible backlight status and blink pattern and the possible failed components.
1) Momentary Backlight and 6X
a) Defective Lamp(s)
b) Defective Backlight Inverter Board
2) No Backlight and 6X
a) Defective TV Microprocessor
b) Defective 24V Power Supply
c) Defective Backlight Inverter Board.

Before replacing the LCD Panel assembly check the backlight Inverter Board outputs. A failure of one of the inverter outputs will also cause this same symptom (Momentary Backlight & 6X).  If there is no backlight before the TV shuts off and activates a 6X, than check the “Backlight ON” signal from the TV microprocessor and the 24V power supply from the G2LE, G2HE, GD2-Board.  If the “Backlight ON” and 24V power supply are okay than the Backlight Inverter board has failed and must be replaced. This will be a rare occurrence but the Inverter board can cause a “No Backlight” condition and must be considered.]

PWB Location

6X Blink - Backlight System Failure (46” Models)

The 46” models have both a 4X and 6X blink protection mode. The 4X blink will, in most cases, be caused by a defective lamp.  Because all the Backlight HV Inverter circuits are located on the GD2-Board, a 6X blink protection mode will be fixed, in most cases, by replacing the GD2-Board. If the GD2-Board does not repair the problem replace the A-Board. The BL-ON and Dimmer signals come from the microprocessor on the A-Board. A shorted or open BL-ON signal will cause this 3X condition. Also a shorted Dimmer will cause this 3X condition.

7X Blink - Temperature Failure

These models do not display a temperature warning OSD dialogue box before shutting-off and going into a 7X Standby-LED blink pattern. It will just shut-off and activate a 7X without any usually warning on the screen.

The main objective when a 7X blink pattern occurs is to determine which of the following possible defects is causing the excessive temperature condition.

Excessive Ambient Room Temperature

Dust or Debris Blocking the TV Ventilation Apertures

Defective Temperature Sensor IC4305 or MT5388 microprocessor (A-Board)

The first step is to notice how long it takes the TV to shut-off and trigger a 7X blink protection mode.

If the TV has an actual excessive temperature condition it will take a considerable period of time to shut-off and indicate a 7X blink protection mode. This is because it will take time for the TV to heat up and for the temperature sensor to detect the excessive temperature and shut the TV off If the TV takes a considerable period of time to shut-off check the following items:

The TV should not be located too close to any heating elements.

The TV should have at least 4 inches of clearance around all sides to ensure adequate ventilation.

Check that all vented areas on the TV are clear of all Dust and Debris.

If the TV shuts-off immediately (Not an Actual Excessive Temperature Condition) after Power-ON then one of the following components has failed.

Main Microprocessor IC3002 (A-Board)

Temperature Sensor IC3502 (A-Board)

In either case the A-Board must be replaced to fix the problem.

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TDA 8362/8361/8360

Data pin IC TDA 8362/8361/8360

TDA 8362-TDA8361-TDA8360
----------------------------
pin1  =DE-EMP[3.2v]
pin2  =REF COIL/0.15uh[5.9v]
pin3  =REF COIL/0.15uh[5.9v]
pin4  =IDENT
pin5  =SIF.IN.VOL[1.3v]
pin6  =EXT.AUDIO.IN[4.3v]
pin7  =VIDEO.OUT[4v]
pin8  =DG.ACC[1.7v]
pin9  =GND
pin10 =VCC[8v]
pin11 =GND
pin12 =CAL.DEC [3.4v]
pin13 =INT.VID.IN/CVBS.EXT.2 [4.3v]
pin14 =SHARP [2.2v]
pin15 =VID.IN/CVBS.EXT.1 [3.8v]
pin16 =C.IN/EXT.IN/CHROMA
pin17 =BRIGHTNEESS [3.2v]
pin18 =B.OUT [2.4v]
pin19 =G.OUT [2.4v]
pin20 =R.OUT [2.4v]
pin21 =RGB.IN [0.3v]
pin22 =B.IN [2.6v]
pin23 =G.IN [2.6v]
pin24 =R,IN [2.6v]
pin25 =CONTRASS [2.2v]
pin26 =COLOR [1.1v]
pin27 =HUE.SECAM.OUT [0.9v]
pin28 =B-Y.IN [4.3v]
pin29 =R-Y.IN [4.3v]
pin30 =R-Y.OUT [1.5v]
pin31 =B-Y.OUT [1.5v]
pin32 =SECAM.SUBC [1.5v]
pin33 =BURST.PHASE [5.4v]
pin34 =3.58MHZ [3.2v]
pin35 =4.43MHZ [3.2v]
pin36 =H.POWER [8.2v]
pin37 =H.OUT [0.4v]
pin38 =SANDCASTLE/FBI/SCO [1.2v]
pin39 =PH2 [2.5v]
pin40 =PH1 [4.0v]
pin41 =VFB [2.8v]
pin42 =VERT,SAWTOOTH [2.8v]
pin43 =VERT.OUT [0.9v]
pin44 =AFT [4.5v]
pin45 =F.N [4.2v]
pin46 =F.N [4.2v]
pin47 =RF AGC [6.5v]
pin48 =AGC [3.9v]
pin49 =AGC ADJ [1.1v]
pin50 =SOUND OUT [4.0v]
pin51 =DEC [3.4v]
pin52 =BG-DEC [7.0v]

LA 76931 IC Data

Data pin IC LA 76931

LA76931


PIN 1= SIF OUTPUT [2.8V DC]
PIN 2= IF AGC FILTER
PIN 3= SIF INPUT [3.3V DC]
PIN 4= FM FILTER
PIN 5= FM OUTPUT [2.5V~3.5V]
PIN 6= AUDIO OUTPUT [DC]
PIN 7= SND APC FILTER
PIN 8= IF VCC [5V DC]
PIN 9= EXT AUDIO INPUT [2.9V DC]
PIN 10= ABL [AUTO BEAM LIMITER]
PIN 11= RGB VCC [8V DC]
PIN 12=R,G,,B OUTPUT
PIN 13=R,G,,B OUTPUT
PIN 14=R,G,,B OUTPUT
PIN 15= NOT CONNECT
PIN 16= V RAMP OSC.CAPACITOR [Connect 0.47uF capacitor to GND]
PIN 17= VERTICAL OUTPUT
PIN 18= VCO I REFERENCE [Connect 4.7k resister to GND]
PIN 19= HORIZONTAL/BUS VCC [9V DC]
PIN 20= AFC FILTER
PIN 21= HORIZONTAL OUTPUT
PIN 22= VIDEO CHROMA DEFLECTION GND [GND]
PIN 23= NOT CONNECT
PIN 24= NOT CONNECT
PIN 25= SVHS CONTROL [CONTROL S OSD]
PIN 26= REM [Remote control]
PIN 27= AV2[Control av1/av2 input]
PIN 28= AV1[Control av1/av2 input]
PIN 29= NOT CONNECT
PIN 30= MUTE
PIN 31= SDA [I2C control]
PIN 32= SCK [I2C control]
PIN 33= XT1 [32.768KHz]
PIN 34= XT2 [32.768KHz]
PIN 35= CPU VCC [5V DC]
PIN 36= POWER [Control standby]
PIN 37= NOT CONNECT
PIN 38= AGC
PIN 39= KEY [KEY control]
PIN 40= RESET
PIN 41= PLL
PIN 42= CPU GND
PIN 43= CDD VCC [5V DC]
PIN 44= FBP INPUT
PIN 45= C INPUT FOR Y/C MODE
PIN 46= Y INPUT FOR Y/C MODE
PIN 47= DDS FILTER
PIN 48= Y INPUT FOR YcbCr MODE
PIN 49= Cb INPUT forYcbCr MODE
PIN 50= 4.43MHz CRYSTAL
PIN 51= Cr INPUT FOR YcbCr MODE
PIN 52= SELECTED VIDEO OUTPUT OR FSC OUTPUT
PIN 53= CHROMA APC FILTER
PIN 54= EXT VIDEO INPUT
PIN 55= VIDEO CHROMA DEFLECTION VCC
PIN 56= INT VIDEO INPIT
PIN 57= BLACK STRETCH FILTER
PIN 58= PIF APC FILTER
PIN 59= AFT OUTPUT
PIN 60= VIDEO OUTPUT
PIN 61= RF AGC OUTPUT
PIN 62= IF GROUND
PIN 63=PIF AMP INPUT
PIN 64=PIF AMP INPUT
sumber data dari google search

LA76938
PIN1=SIF OUTPUT
PIN2=VIF AGC
PIN3=SIF INPUT
PIN4=FM FILTER
PIN5=FM/AUDIO OUTPUT
PIN6=AUDIO OUTPUT
PIN7=SIF APC FILTER
PIN8=IF VCC[5V]
PIN9=VM
PIN10=ABL
PIN11=RGB VCC[12V]
PIN12=RED OUTPUT
PIN13=GREEN OUTPUT
PIN14=BLUE OUTPUT
PIN15=E/W
PIN16=VERTICAL RAMP OSC
PIN17=VERTICAL OUTPUT
PIN18=VCO IREF
PIN19=HORIZONTAL VCC[12V]
PIN20=HORIZONTAL AFC
PIN21=HORIZONTAL OUTPUT
PIN22=GROUND
PIN23=AV1/AV2
PIN24=TV/AV
PIN25=POWER
PIN26=P.03/INT3[REMOT]
PIN27=VOLUME
PIN28=X-RAY
PIN29=TUNER
PIN30=P.16 PWM.3[MUTE]
PIN31=P.12/SDA1
PIN32=P.13/SCL1
PIN33=X-TAL1
PIN34=X-TAL2
PIN35=VDD[5V]
PIN36=SCART
PIN37=BAND1
PIN38=BAND2
PIN39=KEY
PIN40=RESET
PIN41=PLL
PIN42=CPU GROUND
PIN43=CCD VCC[5V]
PIN44=FBP INPUT
PIN45=BLUE INPUT
PIN46=GREEN INPUT
PIN47=RED INPUT
PIN48=FAST
PIN49=CB
PIN50=X-TAL 4,43MHZ
PIN51=CR
PIN52=V OUTPUT/FSC
PIN53=C APC
PIN54=AV INPUT
PIN55=V/C/D/ VCC[5V]
PIN56=VIDEO INPUT/S-C INPUT[INTERNAL]
PIN57=B L D FILTER
PIN58=APC FILTER
PIN59=AFT FILTER
PIN60=VIDEO OUTPUT
PIN61=RF AGC
PIN62=IF GROUND
PIN63=VIF INPUT 2
PIN64=VIF INPUT1

Haier LE55B8500U Service Tips

Haier LED TV Service Guide By Imran Ashraf

Haier K70H6000S (MSD6A918+6M40 movement) LCD color TV software upgrade method

First, upgrade mboot 　　 　　(1), copy the upgrade file MbootUpgrade.bin to the U disk, and plug it into the TV. 　　 　　(2) Press the TV menu button to pop up the design window. Press the four keys of the remote control "8893" in sequence to pop up the factory menu. 3.press the remote control to focus on the "Mboot upgrade -->>", press the OK button, select Confirm to upgrade. 　　Second, upgrade MSD6A918 　　 　　(1), copy the upgrade file HaierUpgrade.bin to the U disk, and plug it into the TV. 　　 2. Press the TV menu button to pop up the design window (Figure 2.1). Press the four keys of the remote control "8893" in sequence to pop up the factory menu. 3. Press the remote control to focus on “6A918Update-->>”, then press the OK key. A confirmation to upgrade the 6A818 interface appears. 4.move the focus to the "Confirm" button, press the remote control OK button, and wait for the upgrade to complete. 　　 　　Third, upgrade 6M40 　　 1.copy the upgrade file to the U disk, and plug it into the TV. 2) Press the TV menu button to pop up the design window (Figure 3.1). Press the four keys of the remote control "8893" in sequence to pop up the factory menu. . 3. Press the remote control to focus on “6M40Update-->>”, then press the OK key. Appears to upgrade the 6M40 interface. 4. move the focus to the "Confirm" button, press the remote control OK button, and wait for the upgrade to complete. 　　 2, abnormal upgrade 　　 upgrade method: The main program and Mboot root directory into the U, U disk into the USB port of the TV, the present controlled hold the Menu key, the power until the upgrade interface appears, release Menu button, TV standby after successful upgrade.

　　

6 pin Regulator SMD Chip Codes
6 pin PWM IC code
5xy= NCP1251,
IDP606 = R7731A,
63xxx = OB2263,
WP35/XP35 = LD7535,
ABx = FAN6862,
xxP/50 = LD7550IL_BL,
xxP/50 = LD7550IL_BL
52xxx = OB2252
62xxx = OB2262
73xxx = 0B2273
AAIxx = SG6858TZ
G6G = AP4313
37x = LD7537

Service Manuals Free Downlaods

Sony 6 Times Blink Solved