Hey batpig, is there a "search" on your site?
My PS3 image blinks, not constantly, but for at least 10 minutes or so, when I start watching something.
My cable box also doesn't like to pass signal, via HDMI, to my 790. I have it hooked straight to the TV and the HDMI is fine.
I think I saw an error message once, very briefly....but haven't seen any video using HDMI from the cable box to the 790 since.
So for now, I use 2 inputs on the TV, optical audio from cable box to 790 and just let the PS3 and 790 make nice, by watching previews and "extras" before starting the movie.
I know, I should read everything and search this thread....but PLEASE
Mitsubishi WD-65734 ~ Denon AVR790 ~ Sony PS3 ~ Comcast HD box
Front: Polk Audio Monitor 60, cherry
Center: Polk Audio CS1, cherry
Subwoofer: Infinity BU-1
Front-Height: Element Electronics EBS1
Surround: Niles HD5, In-Ceiling
Back-Surround: Element Electronics EBS1