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Vertical Lines on LG LCD TV

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thilinasan

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My LG RT-20LZ50 lcd tv screen is abnormal. On the screen there are vertical lines. It starts from the right side of the screen. Now it is spreaded more than 3/4 of the screen.

I resoldered the dry solder on the TCON board. But the screen is same.

Pl help me!!!

I attached herewith screenshots.

[/ATTACH]
 

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Hello there, have you tried to clean the connector from the Main board circuit to the LCD module (Slim type). Sometimes the dust can get into the contact and cause arcing or interference. Also you have to verify the memories voltage they are near to the processor. Regards...
 

Yes, I did that. But the screen is same.
 

Seems to be a defective circuit, if all voltages related to circuitry in Tcon board are ok, I think and insist that the problem is with the memories, Have you resold them with hot air pitol??...Possibly a defective solder could be ther reason, and other thing to check is the clok signal, I dont remember if it is 14Mhz or 27Mhz.
 

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