Report "2" tall has white numbers and letters show up for several minutes goes away. Then a few days ago a large black area of about 15" wide by 8" tall shows up and you can see thru it, more dark Gray transparent, no letters or numbers, and stays on for several minutes and then goes away. I bought the tv from a friend who said there is a dead pixel, which I can sometimes see just a tiny white spot, but I'm wondering if it is causing the problems"