Screene size The picture seems too big for the tv screen, e.g., can't see the score on the football game at the top of the screen. It used to be visible and now I can't "shrink" it back to the correct size - like it should be in "wide screen" but is showing in full... PLEASE HELP I have already tried the "screen position" option

Ok this is called Blooming, this is when the signal intesifier becomes overloaded and the signal becomes overenergized and thus unviewable. This is not an adjustable proble even thoug for a time you can force the picture "shrink" but this is not a fix, it just hides the problem. I suggest that you fide a shop on FixYa that can look at you set and diagnose which components are at fault. You can also take the unit to a Tv shop in your area if that is easier for you.