My tv was working great, then I heard a little pop and the picture had black lines on the bottom right and a very grainy picture. All channels are the same way, sound is fine. I tried unplugging it and all that did was make the entire screen black and it takes about 2-3 minutes for the black to go away. It seems to move left to fight. When the black goes away still left with a very grainy picture.

Televison & Video - V, Inc. - Vizio P50HD Plasma Television