I've had this issue since I had DTV installed last February. Every so often (twice a week or so) the remotes for my clients lose their RF setting. They will turn TV on and control volume but have no control over DTV. When I first encountered this problem, I contacted DTV, had a couple different techs come out to no avail. I had to research this myself to even figure out what was going on. I have to hold mute and enter until the RF is re established. I can't seem to define a repeatable scenario that is causing this. I thought maybe operating the microwave might be the issue but it isn't consistent. Anyone else have this issue and have any success figuring out a permanent solution?