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Old 04-18-2013, 10:41 PM   #1
AlDunbar
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Default Vizio XVT553SV Sound, no picture

I am a complete noob who got a Vizio XVT553SV from a friend. It reportedly had sound, but no picture. I have disassembled it and see no obvious bulging caps. I have checked continuity on all the little fuses and, assuming I did it right, they're all fine.
Where do I start in diagnosing?
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Old 04-19-2013, 04:37 AM   #2
Dgtech
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Default Re: Vizio XVT553SV Sound, no picture

Inverter boards are a good start but the power board cannot be ruled out just yet. Posting pictures would help as well.
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Old 04-22-2013, 05:39 PM   #3
AlDunbar
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Default Re: Vizio XVT553SV Sound, no picture

Sorry for the delay. I am now set up to reply quickly.

Here are two boards, some pics better than others.

Of the two other full-sized boards, one is the large power supply board and the other has "LED driver" printed on it.

Please let me know what else I need to show.
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Old 04-22-2013, 10:21 PM   #4
Dgtech
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Default Re: Vizio XVT553SV Sound, no picture

Hold a flashlight to the screen to see if there is a picture.
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Old 04-23-2013, 07:50 AM   #5
AlDunbar
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Default Re: Vizio XVT553SV Sound, no picture

Just plugged it in myself, LED backlighting seems to be working (the screen has a light to it, just no picture). I played a movie while shining a flashlight at the screen and looking up close, see nothing. Could the backlighting be overpowering any faint image?
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