I have three recievers, one HD and two regular. I've never had problems with any of them until the last couple weeks. The two regular recievers are still working fine, however, the HD reciever will suddenly and randomly drop the signal and the screen will go blank. It sits there for about 1 or 2 minutes and then resets itself and goes through the acquiring signal routine. Sometimes it will be hours between events and sometimes it will do it continuously every few minutes. This is obviously very annoying and I'd like to know what I can do to resolve the issue.