I am having a similar issue as MrTaxMan in that when I connect my new T585 player to my Panny plasma directly via HDMI everything works fine (picture & sound come thru and the player behaves properly). Howerver when I connect the player thru the 775 (via HDMI) I dont get picture or sound and the player itself seems to behave oddly in that the information in the player's LCD display seems inconsistent (the play clock jumps around or pauses) as well as the buttons on the player are unresponsive, but of course without being able to see what the DVD player is doing on screen is frustrating. On the 775's display the HDMI sign is on but the digital sign flashes. I would think this means it is not getting a proper signal from the source, the 585 player.
I do have an HD cable box connected to the 775 via HDMI and picture and sound come thru perfectly.
I am using AudioQuest HDMI-1 cables (1.3 rated)
So I am not sure if the problem is with the 775, the 585 or my setup. I posted a question with Nad help center earlier today and will be bringing both units back to my dealer for further investigation this weekend.
I was wondering if anyone had any insight on this or has been able to succesfully connect these two units together thru HDMI.