syogusr,
I previously owned a Denon AVR-3300 and getting the setup to display on the TV was one of the ergonomic "problems" that I had with that receiver. It sounded pretty good, but it was a P.I.T.A. to use IMHO.
I always had to switch that "switch" on the remote to a video function in order to get the setup to display. Anyway, it's been a couple of years since I owned that receiver, so I don't remember exactly what was required, but I do know that you needed to be connected from your TV to a particular video port on the receiver, and select the appropriate video function on the remote, in order to get it to display properly on the TV.
Sorry I can't be of more value, but keep trying. You'll eventually stumble onto the correct settings. When you do, WRITE IT DOWN! You'll need it in the future.......
Enjoy,
TIC