Newb post...just bought the Onkyo SR803 with two HDMI inputs. My HD cable box (Motorola DCT6200) has a DVI output; tried connecting it to the receiver via DVI-to-HDMI cable. Video is not making it to the TV (Panasonic 42" plasma HD). Have gone through the owners manual procedures exhaustively and verified that the DVI output does actually work (is ok when connected directly to the TV's HDMI input). Anyone else have this problem? Any solutions? Thanks.