Vizio 42"LCD Red Dots when warm

SOURCE: Red Dots

Need to adjust some voltage on Power Board & Y-Main Board

SOURCE: red dots on my plasma screen tv

red dots means dead pixels if you can return it or sell it because it can sometimes spread out, but you can get it fixed for about 140 dollars at minium at a place that fixes the panels and that of tv's if you can tho return it ASAP

SOURCE: RED DOTS VIZIO HDTV P50 10A

Decrease the Vs voltage on the power supply will fix the problem.

SOURCE: Vizio 52 Red dots

It sounds like you have a defective LCD panel. This is more common with the plasma TVs. Are you sure it's an LCD?

SOURCE: red dots like

If they are moving, it is a Random pixel discharge. This can be caused by 3 different problems, that are not easily diagnosed through a chat like this. 1. I could be a miss adjustment of critical voltages that control pixel discharge in the set, although i have not looked at your set in particular, some models are automatic and don't have an adjustment. 2. It could be the x board or equivalent, 3. It could be the panel it's self.

in my experience with this problem the adjustment rarely fixed the problem, more likely the Panel is failing, although sometimes the x board will cause this issue.

I am sorry I cannot get you any closer than that, I recommend getting a repair tech out to check it out. This set is repaired by replacing boards not component level, the boards can be expensive and I don’t want to recommend a board replacement unless I was the tech to actually see the problem.