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Sharp Aquos LC-46D43U No Video

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monge:
Symptoms:
No video, No menu. Turns on, has sound.
Screen lights up.

Replaced the tcon board, but made no difference.

Since the screen lights up, does it mean it's working, or could there still be a problem with it.

Next logical guess is replacing the main board, but I'm not convinced the screen is ok.

Thanks in advance.

michael first:

   Hi, check the voltage on the t-con board.should be +5v or +12v(depending on the mounted panel).

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