Hitachi UltraVision 55HDS52 Television "dish network lost picture" Questions

dish network box or not. then realized dvd was fine; full color. so, i watched some dvd's. then went black and white; lost picture. am i screwed???? am heavily disappointed that tv may be dead after 2

...dish network remote to adjust the tv volume or channel. I tried to push the magic focus on the tv several times, with no luck. I also tried turning the tv off for awhile with not luck. Sorry Bud you ...

...Dish network. It suddenly has lost the picture on Dish, but works with dvd player. It does have sound. I connected to another Dish system at another house and the problem remains the same. Any ideas? ...