My previous Denon (4300 something) the HDMI1 input stopped working and I worked around it my putting the output into another input. Now my 6500H is doing the same thing. Nothing coming out of HDMI1. As soon as I switch it to HDMI2 on the AVR, I get picture and sound. Yes this is the input for my DVR or in this case my TiVo. It was DTV DVR on the previous receiver and it probably gets used more than any other input, but still, two different receivers and HDMI1 goes out on both. Starting to think this should be my last Denon.