Just bought a Denon AVR-E300 and hooked it up to my Time Warner DVR. The sound comes through just fine (albiet at a much lower level than I would expect), but the picture sometimes works and sometimes doesn't. There appears to be no proximate cause for this picture problem. The on-screen error says an incompatible video signal has been received. The Denon does just fine with Blu-Ray movies. If anyone can help me with some setting I need to adjust that would be great. I'm at the point where this new unit is going back to the store on Saturday if I can't get it to work via HDMI.