I just had SBC/Dish Network(522 receiver) installed the other day. When connected to any of the TV1 audio outputs I hear popping sounds in the audio.(Sounds kind of like popcorn just starting to pop) I don't hear it when I hook up to any of the TV2 outputs. It is an intermittent issue but I hear the sounds at least once every 10 seconds. I have checked all of the incoming connections and they seem fine. Anybody know anything about this?