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My Panasonic tv model tx-48cx400b has sound but no picture

My Panasonic tv model tx-48cx400b has sound but no picture

When I turn on my tv, the screen flashes white once and then I can hear sound but the screen stays black. How do I fix this?

ANSWERS:

"@ghada67 in a darkened room shine a flashlight at an angle against the screen when the sound is playing. See if you can make out shapes silhouettes etc.,. If so it is your backlight that is not working. Possible causes are failed backlight array, bad power board, bad mainboard (unlikely) or bad t-con board. You would have to remove the back cover from your TV and take a couple of good pictures of your boas so that we can see what you see. That way we can guide you some more and hopefully get you back to watching your TV.

Adding images to an existing question"

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