Question about Vizio E550VL 55 in. LCD HDTV

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I have sound but no picture

I can look down and see no lights on. when I put a light up to screen I can see the menu come off and on.

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Check and replace the back-light inverter. Check the associated circuit parts too. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts there.

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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If screen is gray glowing, the T-CON is bad or it is not getting the 12vdc from the logic board. You may have problem with logic board but do some voltage checking first.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:

Posted on Jun 28, 2010

Testimonial: "I am not much of a do it yourself guy when it comes to electronics but I think I might give this a try--this gives me a good place to start--I'll check your trouble shooting guide and then the voltages and see if I can fix this--I have already replaced the TV but if I can get it going I'll have one for the spare bedroom---thanks for your advice. Clark Utah"

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Looks as though the screen inverter has failed although hard to tell - am I right in saying the screen is not lighting up at all?
ONLY DO THIS IF YOUR TV IS OUT OF WARRANTY, otherwise call the seller or manufacturer and arrange a service.
If the screen is black - i.e. does not light up at all - then it is probably an inverter fault. Check this by shining a torch into the screen holding it very close, a faint image should bounce back at you. If that is the case, you need to open the back, find the part number for your inverter - usually a long panel down the left - and search for one on ebay or on a tv parts website.
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Sounds like you have a backlight problem. To verify this, turn on the set, dim the lights in the room, and shine a bright flashlight on the screen. If you see a faint picture you have a backlight fault. It could be as simple as a bad capacitor in the power supply, or a faulty inverter board, or in rare cases a bad backlamp.

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