Hi, I have sony W700B. Has sound but no picture. Backlight ok. I have changed the Tcon board and tv picture works for some time then again same problem. Sound ok. But picture blank. Can anyone please Tell the issue .
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Mahmudur Rahman Hira
if you are absolutely sure that you backlight is working and since you already changed the T-con board, the next suspect is the main board. Of course you do want to check the voltage from the power board to the main board first. That way you know that the main board gets the right signals. If it does, replace the main board next. If it does not you may have a bad power board.
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