I have a Denon AVR-X4400H that was driving my old Epson projector. That one quit two weeks ago, and Friday a shiny new Epson 5040UB showed up to take it's place. The Denon has only two sources ... a Roku Streaming Stick+ and an Oppo UDP-203.
Initially the Epson would do nothing but say "Not Supported" or "No Signal", so I brought a TV down and plugged it into the other HDMI out. Using that I discovered the Denon was doing conversions to 1080p/24, which I vaguely recall b/c the old Epson never worked with 1080p faster than that. Still, the 5040UB should be able to display that, and it wasn't.
Using the TV as my display I fiddeled with settings on both the Roku & the Oppo, until I got the Roku to show something. I couldn't get the Oppo to do anything, even when I set it to 1080p/24.
Once the Roku was working I turned off video conversion on the Denon. *poof* Not supported comes back. No matter what I set the Denon to, if that setting is not "Conversion enabled to 1080p/24", the 5040UB shows "Not supported" for a bit, then usually (but not always) shows "No signal".
Many times during the dozens of changes I've made, I checked Info->Projector Info. ONCE it said something weird like 2160x1080. All other times it's just all dashes.
I spend many hours last weekend combing the 'net, and found naught. I also tried a number of times to search just this message board, to no avail. I could search all of the parent, but that includes more irrelevant hits than relevant ones, covering all <3k projectors. (shrug) Just wanted you to know I tried. (grin) And there's 503 pages here! Couldn't manually search them all to see if someone has solved this before. For what it's worth a 'net search only hits this board once, on page 351, so maybe I have searched it in a way.
I also download the manual from Epson (I don't even have a disc with mine that I'm aware of) but that revealed pretty much nothing.
I for one would be delighted to hear suggestions. I find it unlikely my new toy is broken in a way that only allows one resolution and frame rate. It's much more likely that I'm not doing something right.
Thanks for your time...