This might be irrelevant since you mentioned an AM remote, but, I had a similar problem with a UHF Pro 6.3 remote late last week. Called tech support, they're sending me a new remote (managed to get them to send it for free too). After that call, I did some reading on this forum, and discovered how to change the UHF band. I removed the battery compartment cover, found the switch in the top position (UHF Band A) and switched it to the bottom (UHF Band B), brought up the system info screen on TV1 and hit the record button on the UHF Pro remote several times; the receiver (a VIP 622) picked up on the change and voila, no problems since (so far anyway). The odd thing is that before doing this, I would have to reboot the receiver every 15 minutes for the UHF Pro remote to continue working (e.g., after 15 minutes, it would stop controlling the receiver). Interestingly enough, I took that remote and readdressed it to my 522 receiver and it worked instantly and flawlessly. Given this behavior, I still suspect there is a problem with the 622 receiver. By the way, anyone have any clue why changing the UHF band on the remote would "correct" my problem?