I’m not very savvy when it comes to Dish, but my TV 2 recently became fuzzy. You can see the picture but there are static lines running through it and a high pitched Morse code noise. I’ve tried changing from air to cable output, tried lower and higher numbers. Nothing seems to work. This TV has been fine and can watch TV1 with no interference, but suddenly TV2 is unwatchable. I have a Dish VIP722 box. Any help or suggestions would be greatly appreciated.