Well my main 721 developed an erratic input 1 would go from being fine to pixelating etc. Got a replacement and basically the same problem only it totally looses signal and goes in and out of aq2uiring signal but again input one. Both recivers I swapped the cables on the back and problem stayed with input 1. Called Dish and they want to send a tech saying maybe a grounding problem so I said wait and swapped the new one with the 721 in bedroom. The BR receiver works fine wherever it is but the new one still messes up even in the bedroom. Any thoughts/suggestions?
