Vizio VU42l Washed out picture help

[falcom]

I have a Vizio VU42l.
The picture is washed out with very little colors. All menu settings make changes but not enough to affect picture quality. I replaced the mainboard with no improvement. There are no visible bad caps or power supply issues. My only thought is that it might be the T-con board but I understand that I would have no picture or a scrambled picture if that were the case. Any suggestions.

[budm]

Re: Vizio VU42l Washed out picture help

This can be the T-CON or the Gate/source drive ICs on the panel are being driven with the wrong voltage. I would try new T-con first or check the voltage of the Regulator ICs on the T-CON to see if it has correct voltages.

[tibimakai]

Re: Vizio VU42l Washed out picture help

When I cut trough on one of the tabs it looked like this.

[budm]

Re: Vizio VU42l Washed out picture help

Thanks tibimakai, glad to know that since it is so hard to be 100% for sure unless a lot of us have seen a lot of failure modes. I have seen this in the Samsung monitor Syncmaster 2233, but the T-CON is built-in so it is hard nail down the cause since you cannot separate the circuits from the LCD panel itself.

[tibimakai]

Re: Vizio VU42l Washed out picture help

do you remember when I tried scraping the tab on that 46" Vizio, somehow I cut through that tab and cut like seven traces and the picture looked very washed out. By the way with a sandpaper it works much better, but now it's to late, selling parts out of that TV.