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My TV has sound but no picture. Can it be fixed and how?

My TV has sound but no picture. Can it be fixed and how?

When I turn my TV on it has no picture only the sound works. Can it be fixed and how?

ANSWERS:

@tlortiz this could be related to a bad main logic board, power board or the backlight LED driver boards. First test you want to do is to shine a flashlight at an angle (TV on and at a known good station) See if you can make out shadows, that would mean that your backlight does not come on. You will have to remove the back of your TV set and check out a few boards.You do need a multimeter etc to work on it. Post some images with your question so we can see what you see. For that use this guide.

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