Question about Vizio M420sv 42 Inch Class Edge Lit Razor 1080p 120hz Led Lcd Hdtv

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LCD TV lines

Vizio M420SV LCD encountered water. Everything seems to work except now there are some vertical gray lines on the right half of the picture. Took it to TV repair store and was told that the "Video Drive Circuit" was faulty. I've tried to look that term up with no success. I'm hoping it's something simple like replacing/repairing the main board but I'm not sure. Any help is appreciated and also what part to replace if any. Pics found here: tp://s307.beta.photobucket.com/user/mattconlin/media/2012-11-03213837.jpg.html?sort=3&o=0 And here: tp://s307.beta.photobucket.com/user/mattconlin/media/2012-11-03213811.jpg.html?sort=3&o=1 Thanks.

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  • Vizio Master
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The shop is in business to make money so no free fix--Someone with a good eye who opens the set may see where the water went and then Google the model for a list of boards......several dealers (not Vizio) stock and sell all or most boards in the newer sets.

Posted on Nov 04, 2012

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Mas Baz
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SOURCE: LCD tv Vizio 42 inch has vertical colored lines

hello imvega7, as i know, 42 inch is a plasma display TV.
Refer to your image, and my experience that symptomp because of connection between buffer PCB and panel. Some cases, dirty conection may cause this symptomp.
Un plug power cord, open rear cover, fine pcb on upper or lower panel.
unplug flat cables from pcb buffer, clean soket using a brush. And also clean flat cables using celaner or alcohol.
Wait untill that conection dry. reassembly and try it.
i hope that help you.

Posted on Mar 15, 2011

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