I have a HR54 that worked without any issues for over a year. Now intermittently the screen will go black, but you can still get banner information and go to the guide. You can also watch recorded shows. A reset of the receiver clears the problem. DTV replaced the dish with a new model of LNB but the problem continued. The sent me a new HR54 and I still have the same issue. Tried searching for this symptom but haven't seen anyone with the same problem. Any thoughts? I also have 3 HR24 receivers connected with the HR54 and use whole home. These are connected together with ethernet cabling in I see is known as 'unsupported'. Not sure if that's causing this problem. But I've had it that one since before I got the HR54.