Tcon Test

Problem
Sony Bravia KDL 52S4100.
 When turn it on, it takes a long time to warm up, 20-40 minutes. During this time, the screen is a very faint blue. can see back lighting coming through the back of the screen. Once the picture comes on, it has horizontal lines on the left hand side for 10 minutes or so, then it is fine. Once warm, can shut it off, and turn it back on with no issues. It comes right back on. During all of this, the green LED power on light, stays lit.

Now, there is a Test I call the TCON wiggle test. You wiggle the TCON's LVDS cable, and by rocking it, you generate noise on the TV screen that you can see. If you SEE NOISE, you know your TCON is working, and then we have LESS to test !!

It can verify if your TCON is BLOCKING the picture until you shut it off and restart it (tells me you have a digital data issue, if restarting it gives you a picture) Here's a picture of the TCON WIGGLE TEST --



That's a Samsung TV but ALL TV sets are the same. Sony just makes there TCON look like a SONY TCON. Same place, same cables, connected to the SAME boards.

Now...before you do the TCON TEST, Try the MENU test with the blue screen -- if it appears, your TCON is fine.

My recommendation -- Remove the TV's rear cover first, put the TV back on it's stand to hold it upright so you can see the TV screen. Turn it on, when you have the Blue screen, check the MENU (last circuit on the TV's main board before the signal goes to the TCON) and if that doesn't show up, do the wiggle test to generate noise on the TV screen. You'll see Flashes of light pop up on the screen and that tells you the noise is being transferred thru the TCON !

Simple way to divide and Conquer video problems.

 

The TCON wiggle test tells me a LOT...if you got flashing when wiggling, then your TCON is able to recieve NOISE and transmit it to the TV screen !

That tells me the TCON is working, and it can only be the main video on the main board.

Love that TCON test....Sony trainer taught me that.

PART NUMBER -- 1-857-227-11

All Data sheet

LCD TV Problems

LCD LED TV panels connection understanding by Imran Ashraf.

(1)STV
Vertical Sync Input.
The rising edge of STV begins a frame
of data. The STV input is used to generate the high-voltage STVP output.
(2)STVP
High-Voltage Scan-Drive Output.
STVP is connected to VOFF when STV is low and is connected to VON when STV is high and CPV1 is low. When both STV and CPV1 are high, STVP is high impedance.

(3)CPV1
CPV (Clock Pulse Vertical) -Vertical Clock Pulse Input.
CPV1 controls the timing of the CKV1 and CKVB1 outputs, which change state (by first sharing charge) on its falling edge.

(4)CPV2
 Vertical Clock Pulse Input.
CPV2 controls the timing of the
CKV2 and CKVB2 outputs, which change state (by first sharing charge) on its falling edge.

(5)CPV3
Vertical Clock Pulse Input.
CPV3 controls the timing of the
CKV3 and CKVB3 outputs, which change state (by first sharing charge) on its falling edge.

(6)CKV1
 CKV( Clock Signal)- High-Voltage Scan-Drive Output.
When enabled, CKV1 toggles between its high state (connected to VON) and its low state (connected to VOFF) on each falling edge of the CPV1 input. Further, CKV1 is high impedance whenever CPV1 and STV are both low.

(7)CKV2
High-Voltage Scan-Drive Output.
When enabled, CKV2 toggles between its high state (connected to VON) and its low state (connected to VOFF) on each falling edge of the CPV2 input. Further, CKV2 is high impedance whenever CPV2 and STV are both low.

(8)CKV3
High-Voltage Scan-Drive Output.
When enabled, CKV3
toggles between its high state (connected to VON) and its low state (connected to VOFF) on each falling edge of the CPV3 input. Further, CKV3 is high impedance whenever CPV3 and STV are both low.

(9)CKVB1
CKVB (Inverted Clock Signal)- High-Voltage Scan-Drive
Output.
CKVB1 is the inverse of CKV1 during active states and is high impedance whenever CKV1 is high impedance.

(10)CKVB2
High-Voltage Scan-Drive Output.
CKVB2 is the inverse of CKV2 during active states and is high impedance whenever CKV2 is high impedance.

(11) CKVB3
High-Voltage Scan-Drive Output.
CKVB3 is the inverse of
CKV3 during active states and is high impedance whenever CKV3 is high impedance.

(12)CKVCS1
CKV1 Charge Sharing Connection. CKVCS1 connects to
CKVBCS1 whenever CPV1 and STV are both low (to make CKV1 and CKVB1 high impedance) to allow CKVB1 to connect to CKV1, sharing charge between the capacitive
loads on these two outputs.

(13)CKVCS2
CKV2 Charge-Sharing Connection. CKVCS2 connects to
CKVBCS2 whenever CPV2 and STV are both low (to make CKV2 and CKVB2 high impedance) to allow CKVB2 to connect to CKV2, sharing charge between the capacitive
loads on these two outputs.

(14)CKVCS3
CKV3 Charge-Sharing Connection. CKVCS3 connects to
CKVBCS3 whenever CPV3 and STV are both low (to make CKV3 and CKVB3 high impedance) to allow CKVB3 to connect to CKV3, sharing charge between the capacitive loads on these two outputs.

(15)CKVBCS1
CKVB1 Charge-Sharing Connection. CKVBCS1 connects to
CKVCS1 whenever CPV1 and STV are both low (to make CKV1 and CKVB1 high impedance) to allow CKV1 to
connect to CKVB1, sharing charge between the capacitive loads on these two outputs.

(16)CKVBCS2
CKVB2 Charge-Sharing Connection. CKVBCS2 connects to
CKVCS2 whenever CPV2 and STV are both low (to make CKV2 and CKVB2 high impedance) to allow CKV2 to connect to CKVB2, sharing charge between the capacitive loads on these two outputs.

(17)CKVBCS3
CKVB3 Charge-Sharing Connection. CKVBCS3 connects to
CKVCS3 whenever CPV3 and STV are both low (to make CKV3 and CKVB3 high impedance) to allow CKV3 to connect to CKVB3, sharing charge between the capacitive loads on these two outputs.

(18)BOOST
Operational Amplifier Supply Input. Connect to VMAIN
(Figure 2) and bypass to BGND with a 1μF or greater ceramic capacitor.

Plasma Problems

Pixelation

Pixelation is a common plasma TV problem that many owners face. This is basically when you start seeing squarish spots on your TV. Before you jump to conclusions, do a simple check to confirm that it is, in fact, your TV that is the problem. Try using inputs from multiple devices (cable, gaming console, computer). Chances are, it's the input that's the problem. If the problem still persists, try changing the screen resolution, like watching a 4:3 format video in a non-stretched mode. If you still see the problem, you don't really have much of a choice than to call the seller.

Sunburst Pattern on Display

Another plasma TV problem is a sunburst pattern on the display, similar to ones observed on laptop screens. What happens is you may see a ring or a burst of color. The main reason for this is a screen that isn't completely flat. This can be caused by something like pressing the plasma television screen too hard. You may cover the television with a glass case, but this will only increase the screen's reflectivity.

Burn In

This is a common plasma TV problem that causes a static image to be faintly visible even after the image on the screen changes. This is called image retention or image burn-in, and the pattern remains visible when you are watching something else. This problem is now almost undetectable in newer plasma screens that have better technology. Manufacturers now include built-in technology like 'pixel wobbling' to tackle this problem. This technology subtly shifts the image to surrounding pixels and keeps the images moving. Quite frankly, the only places where burn-ins are common are in plasma TVs used to show airline timings in airports. Apart from that, a slight ghost image that lasts for a short time before fading off is all that users see.

Over-Heating

Plasma TVs basically work by heating up gases inside the panel. While this does not directly imply that plasma TVs tend to overheat, leaving them on for a long duration (upwards of 18 hours) can cause them to get slightly hotter than their usual temperature. Still, this is not a problem to get worried about, and poses no harm to you, your room, or your TV. Just make sure there's enough space for ventilation between the TV and the wall behind it.

Fan Noise

This is, again, a problem prevalent mostly in older plasma TVs. New TVs from popular brands rarely pose this issue, and in the case that they do, it is usually a manufacturing defect. Exercise caution when you're buying second-hand plasma TVs though, this can be one of the more common problems with them.

Reflection

Reflections on the TV screen from surrounding light sources is a very distracting and annoying problem as the focus keeps shifting from the images on the screen to the images reflected. To overcome this problem with plasma TVs, you can either pull up the blinds, or cut down on the light intensity in the room while watching TV. Another solution is to buy plasma TV's that have a built-in anti-reflective coating on the screen. This will help reduce the reflection on the screen, but you still need to adjust the room lighting.

Increased Power Usage

Plasma TVs tend to consume more power than most other display units, therefore you may observe a hike in your power bill. Reducing the brightness and contrast to medium levels will help the issue, but reducing picture quality after buying a TV that features it is not really an option that one would go for. All in all, the bills that you rack up due to owning a plasma TV aren't too huge when compared to LCD and LED TVs. You also have to consider that primitive plasma TVs used crude display methods. New technology has made it possible to produce increasingly power-efficient plasma TVs. They're still not as efficient as LED/LCD TVs though, so it is prudent to consider a plasma TV as a long-term expense.

Phosphor Trails, Rainbow Effect, and Posterization

Another plasma television problem is a phosphor trail or phosphor tag. You will observe this problem when viewing fast-moving, graphics-intensive computer games or movie scenes, especially in case of black and white movies. This problem is due to the instant change from light to dark in an area of the screen. You may observe green trails or flashes in such cases. Very few people observe this effect and even if they do, it is small enough to be ignored. If you are troubled by this green trail, just lower the contrast or have more ambient light sources to dull the effect. Other related effects are usually a visible rainbow-like formation when the display includes high-contrast images, and getting a poster-like effect when the image contains rather small points of bright light (like the Sun behind the mountains). All these issues were recorded mostly in older plasma TVs (2010 and before); new technology has done a lot to minimize them to negligible limits.

High Altitude Issues

If you're living somewhere above 6,500 feet, you need to take care of which model you're buying. There is a reason why flight TVs are always LCD. That's because plasma TVs do not function properly at high altitudes. The TV starts making a buzzing sound after a while, mostly due to the fact that the atmospheric pressure is too low to keep a consistent level of gases inside the panel. All plasma TVs come with a maximum altitude limit. Most of them have it at 6,000 - 6,500 feet above sea-level. However, certain brands from LG work till about 8,500 feet. So if you think the altitude might be a problem, check the TVs maximum altitude limit before buying it.

People commonly have questions about whether any special care needs to be taken while shipping a plasma TV and if one needs to wait before setting it up for use. A common concern among plasma TV buyers is about how safe it is to transport the TV set with its screen laid down. The issue here is with the glass breakage. If the screen, in the laid down position, is cushioned (covered in a soft and thick material) during transport, cracking of the glass can be avoided. The other question is whether or not to wait before you start using the television set. Unless, it has been moved from some cold location to room temperature (this may lead to condensation on the glass), there is no reason to wait for any specific duration before you start using it.

There are other myths and rumors about plasma TVs that contribute to lower their sales. When all is said and done, plasma TVs still offer the best picture quality, and will probably continue to do so for at least a while longer. Still, if you intend to buy one, make sure you take all the above points into consideration and hopefully get the one that suits your needs.

Bad Capacitors

 

 Samsung LNS4051D would not turn on and the power LED would blink 4 times and the relay would click and this would repeat again and again. I replaced power supply board parts CM806, 811, 812 & 817, all 1000 uf 10v capacitors, three had their tops bulged up slightly that I missed on initial visual inspection.  I replaced them with Radio Shack part 272-1032, 1000 uf, 35v. They are slightly bigger, but fit OK. TV is working fine now.

Samsung, without a doubt, makes one of the best looking LCD screens out there. They look GREAT. But they seem to have serious issues with quality control and cutting corners on part suppliers that make their tvs a gamble to buy.

Esquemas y manuales de servicio

1. LCD LED TV No Display,
2. Slow Motion Picture
3.  Grey Or Black Display,
4.  White Display,
5. Screen Double Images,
6. Display Jumping/Jurking,
7.  Display Distortion, Ghost 
8. Display Colour Change Solution,
9. Negative Image,S Solarization 
10. Horizontal & Vertical Lines/Bars,
11. Half Screen Display Problem
12. Mapping , Picture Freezing
13. Lines removing Method
14. Ghost Image Also many more
15. With big collection of
16. Cof Data including 
17. No1 eBook

LCD LED TV Panel Bypassing ebooks Package Buying Now And Get 4 ebooks.

Schémas et manuels de services

HOW TO ENTER SERVICE MODE [FACTORY MODE]_AOCLE32D5520_LE42D5520 - FIRMWARE UPGRADE

FACTORY MODE [SERVICE MODE]

1. Factory Mode

Turn on the TV. Press menu key and then press number key 1+9 +9+9+back. It will achieve the factory mode.

2. ADC Adjustment (It’s no need to adjust ADC.)

3. White Balance Adjustment

(1) Enter into the factory mode :(same as the above-mentioned).

(2) Take an example of adjust Ypbpr source.

a. Select item “Source”: Ypbpr and item “Color Temp”: Normal, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (COMPONENT mode: TIM = 314; PAT = 141(80IRE))

b. Select item “Source”: Ypbpr and item “Color Temp”:Warm, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (COMPONENT mode: TIM = 314; PAT = 141(80IRE))

c. Select item “Source”: Ypbpr and item “Color Temp”: Cool, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (COMPONENT mode: TIM = 314; PAT = 141(80IRE))

(3) Take an example of adjust VGA Normal:

a. Select item “Source”: VGA and item “Color Temp”: Normal, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (VGA mode: TIM = 137; PAT = 141(80IRE)

b. Select item “Source”: VGA and item “Color Temp”: Warm, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (VGA mode: TIM = 137; PAT = 141(80IRE)

c. Select item “Source”: VGA and item “Color Temp”: Cool, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (VGA mode: TIM = 137; PAT = 141(80IRE)

(4) Take an example of adjust AV Normal:

a. Select item “Source”: AV and item “Color Temp”: Normal, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (AV mode: TIM = 303; PAT = 141(80IRE)

b. Select item “Source”: AV and item “Color Temp”: Warm, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (AV mode: TIM = 303; PAT = 141(80IRE)

c. Select item “Source”: AV and item “Color Temp”: Cool, Adjust gain of RGB to meet spec in the below setting of Tim/pat. (AV mode: TIM = 303; PAT = 141(80IRE)

(5) Take an example of adjust HDMI Normal:

a. Select item “Source”: HDMI and item “Color Temp”: Normal, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (HDMI mode: TIM = 347; PAT = 141(80IRE) 

b. Select item “Source”: HDMI and item “Color Temp”: Warm, Adjust gain of RGB to meet spec in the below setting of Tim\pat. (HDMI mode: TIM = 347; PAT = 141(80IRE)

c. Select item “Source”: HDMI and item “Color Temp”: Cool, Adjust gain of RGB to meet spec in the below setting of Tim/pat. (HDMI mode: TIM = 347; PAT = 141(80IRE)

CLICK ON THE TABLES TO MAGNIFY

Note: all models of color temperature within specification, but also ensure the brightness conform to engineering specification.

FIRMWARE UPGRADE

• Press “Menu+1999” into factory menu set USB update options to “ON”
• AC on (Power plug)
• Plug the USB disk on the USB port on the side I/O port of TV. 
• TV AC power off à AC power on
• TV will upgrade by itself after detect the USB disk condition and the content of the pkg file. 
• When firmware update OK, the TV will display “firmware update finished”.       
• Remove USB disk from TV.
• Check if the software version is correct. 
• Do factory reset in user menu.
• Reset finish, AC OFF. 
• How to Remove LCD Screen lines

Schema's en service manuals

TROUBLESHOOTING - AOC-LE32D****_LE42D**** - LED-LCD TV

NO POWER

CLICK ON THE CHARTS TO ZOOM IN

DELAY TO START

ABNORMAL DISPLAY

NO DISPLAY

AUDIO PROBLEM

REMOTE CONTROL MALFUNCTION

OSD UNSTABLE