My setup is connected as follows: Toshiba A1 to 4806 to Samsung 4051D via HDMI. I went to watch MI:3(HDDVD), turned everything on, but I don't get a video signal, just screen flashes and streaks. I've tried all 3 HDMI slots and nothing. I also have an Xbox360 hooked to the 4806 via component, so as to output through the HDMI. When I choose this input I get a picture but it flashes on and off. I'm thinking something has gone wrong with the HDMI board. Anyone else had this problem? I've tried both a reset as well as unplugging the unit over night to see if it would solve the problem. Still a no go. Since Denon now has the new boards in the 4806CI, anyone think I could get Denon to replace mine with one off these?