I have a strange problem that I could use another set of eyes on. I had to replace our DVR recently, and the new one can't maintain the HDMI connection. I have a 2809CI AVR and the DVR is a CISCO 8642HD from Rogers Cable. It is a replacement, but the old one was also an 8642. What's happening is that once a minute or so, the video and audio signal go blank, and then reappear. It's almost as if the signal is being renegotiated. This happens on live TV or recordings. The recordings are working fully, in as much as I can rewind and watch the portion of the program that got blanked out. I'd hate to have to swap the unit again, as we were away for 3 weeks and there's quite a bit recorded that we'd like to watch. Thanks!