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I have a Vizio vf552xvt. It has a problem with the black pixels turning red. I was advised to replace the mainboard. That fixed it for about two weeks and it started again. I replaced it again and the same thing happened, about two weeks and red again. Tried a new T-CON board but no help. I guess something is ruining these mainboards. Power supply maybe? Any help would be greatly appreciated.

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You have replaced the only two parts that can cause this, outside of the LCD display panel being bad. It is unlikely that either of these two modules will go bad in the identical way unless that has been an issue with Vizio and you bought used parts. If you bought new parts then the LCD panel is the end of the line. Shop-jimmy (used)

Posted on Jan 02, 2011

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