Aaaaarrrrrrrrrrrrrrrrrrrggggggggggggggggghhhhhhhhhhhh I walk out of the room for 2 mins to get my dinner, I come back in and a 3" wide strip, half the height from the top of my 42" Panny series 4 screen has gone totally black on the right side of the screen! I've turned it on and off again, but no joy. anyone know what this might be? HELP ME!!!!! It's still under warrenty, does this cover something like this? It's not just a dead pixel, a whole chunk has gone!!!