OK, as I just received my Belkin 5 HDMI switcher with 3 free HDMI cables. Hooked up my Xbox 360 Elite, PS3, and Explorer 8300HD Cable Box. The objective was to run them all into the HDMI switcher, then into the Denon AVR-887, then into the TV, since it has no HDMI inputs, only one DVI. Well when I hooked up the Cable Box, it only outputs to 480p. I had it working on 1080i when it ran straight to the TV.
I know it is not the Belkin because I ran the cable box into its own HDMI input on the receiver, and it still didn't switch to 1080i ouptut. I know it is the receiver because if I leave the cable box on, and turn the receiver off, it flips to "1080i" on the cable box display.
Any help on getting it to show 1080i to the receiver?