We started Dish a few months ago and have a hopper and joey. At least once a day, the tv connected the Joey does not get the video or audio, though I can scroll through the guide. When I push select, the small screen in the upper left turns black and there is no way to get it back except to push the red button o the hopper. Occasionally I can duplicate the problem by watching a recorded show, press stop, press live tv and I get the black screen with the guide. All dish parts have been replaced once except the dish itself. 5 techs have been to the house. One ran coax from the gray box that connected othe lmb (which was replaced twice) to the hopper and joey and still had the problem. Today's temporary solution was replace he Joey again and the occasional problem happened before the tech left. The wireless adapter is currently disconnected as that was a possible fix, but does not seem to have helped. The tech said maybe my Comcast internet that is run through coax in the same box outside is an issue due to leakage. I am open to suggestions. I saw one thread that said a certain type of coax is needed, but I don't know how to tell the difference unless a label is printed.