lcd panel destroys t-con factory

Superimposed picture might be a bad tab bond, or might be a bad connection on the timing controller. I"d take the TV apart, enough to expose the timing controller and ribbon cables going from it to the panel. Run it with the back off (keep hands free of backlight inverters and the AC power supply) and start pushing on things. When you can make the image change by pushing on something, you"ve found your culprit.

One thing I did figure out is that if I have right LCD ribbon disconnected and left connected that half the screen works (no lines) and the other half turns white, and the VREF light on the tcon board comes back on. OTOH if I have left LCD ribbon disconnected and right connected it is backlight and black and no picture on either side.

I read another post in here last night about a similar issue and the response was a brief "panel problem". Does anyone have more information about common problems in that area or how I might diagnose or repair the board going into the LCD (that is, the board that takes the LCD ribbon, I don"t know its name). It doesn"t look like something I can just order.

I noticed that there are some capacitors on the LCD-connecting board (do not know how to name it), that are connected to GND on both ends (marked red). This looks suspicious to me.

I tried on the tcon side as well and noticed that I have good voltages there when I disconnect the panel, but when I connect it again, I will not see any voltages there.

1-5. Cleaning the LCD Panel ................................................................................................................................................. 15

Panel system LCD (Liquid Crystal Display) Panel U.S. Patent No. 6,816,141

A Lift-up Panel Brackets to detach from Bezel Ne les remplacer que par une piece portant le these components are repaired and/or replaced.

Wipe the LCD screen gently with a soft cloth. (Check the Sony Electronics Service Information website for any additional service related issues for this model.)

GND RN-CP C6165 1 T-CON_Vcc12V

4.7uH X7R 2 T-CON_Vcc12V

— C6156 4 T-CON_12V_GND

TMP R6177 15 T-CON_ON

CHIP 12V 14 T-CON_Vcc12V

D6151 T-CON_12V_GND C6183 R6813 R6821

T-CON Q6151 C6178 JR6000

-OUT3 T-CON_Vcc12V C 6 1 7 3 C6173 8 1 C6175 R6175 JR6046

JW6049 C6153 JW6043 T-CON JL6157J L 6 1 5JL6156

CN6800 T-CON_ON _Vcc12V JL6154 C6817 JL6158 JL6176

T-CON_Vcc12V DIMMER JL6154 JR6024 IC6801 JL6158 JL6176 D6805 D6806

JL6158 RN-CP C6165 1 T-CON_Vcc12V

Q6152 B B 2 T-CON_Vcc12V

50V L6152 *C6156 1/10W DSA500100L 4 T-CON_12V_GND

LV5768M 15 T-CON_ON

+OUT3 JW6058 T-CON JL6195 R6860

+OUT4 4 T-CON_12V_GND JL6157 JL6801

T-CON_12V_GND D6827

T-CON_Vcc12V D6823 1 8 JR JL6805 +OUT4

T-CON_ON R6855 JR6006 R6856 C6837 JL6175 JL6820

T-CON JL6402 JL6181 JR

— — T-CON_ON JR JR6017

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For example, it could signal that the power supply is either failing or faulty. In other cases, it could mean you have not connected the HDMI cable well, or there is a poor connection between the processing board and the panel. But another cause could be the picture does not fit the screen exactly.

Sometimes vertical lines on an LCD display could mean a damaged T-Con board. The T-Con or timing control card controls the timing of pixels displayed on the screen. If your T-Con board is faulty, the only solution is to repair or replace it.

You can remove the T-Con board yourself and replace it with a new one. But if you choose the option, you will have to be careful not to destroy anything on the TV.