For the past two mornings in a row, I turn on my tv and I can't get the 722k to do anything. The receiver comes on to the channel we were watching the night before and plays that channel just fine. But i cant change the channel or even open the guide. Its as if the remote doesn't work. But my remote's set up to control tv, 722, and Denon receiver. And it works fine on all the other devices. I can do a receiver reset and it's works fine after that. Has anyone else experienced this? Is this a sign my receivers about to go bad?