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My in-laws purchased the UHZ-65 last year and I installed it in their home theater, replacing the lamp-powered version of the same projector. It's hooked up to a Denon AVR-X6300H 4K receiver. Everything worked great for a couple of months, but then it stopped working with a 4K signal. By switching the HDMI cable on both devices to the non-4K ports (HDMI1 for the projector), I was able to keep it working with HD signals only. However, now it stopped even doing that. No video signal at all from receiver to projector. If I connect the projector directly to the cable box or Xbox, I get a picture, which makes me think there's a problem with the receiver. My hope is that there's some sort of setting that's causing an incompatibility, rather than a hardware issue. Anyone have any suggestions?
 

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I noticed the last couple of weeks when I play 4K HDR games on my PS4 Pro then switch back to my HTPC the projector picture mode stays on HDR, even if the movies I play are SDR. any reason for this? sometimes it switches back normally to SDR/cinema and sometimes it just sits at HDR. any reason for this? it didn't do this before.
 

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I noticed the last couple of weeks when I play 4K HDR games on my PS4 Pro then switch back to my HTPC the projector picture mode stays on HDR, even if the movies I play are SDR. any reason for this? sometimes it switches back normally to SDR/cinema and sometimes it just sits at HDR. any reason for this? it didn't do this before.
Make sure the projector is not in simulated HDR mode. When watching SDR content, set the PJ into the picture mode you desire. Then go to the dynamic range module and set it to "auto."
 

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My UHZ65 will START a movie in HDR, and then moments later kick out of HDR to a dimmer picture. Any ideas?
 

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I noticed the last couple of weeks when I play 4K HDR games on my PS4 Pro then switch back to my HTPC the projector picture mode stays on HDR, even if the movies I play are SDR. any reason for this? sometimes it switches back normally to SDR/cinema and sometimes it just sits at HDR. any reason for this? it didn't do this before.
It happens something similar to me when I start everything, first the Projector, then the AVR and finally the source SDR and the projector syncs at HDR.

I think it is some kind of wrong or incomplete HDMI handshake when changing from different sources. Also, when AVR is off, the HDMI passthrough of the last connected source may play a role in that mess.

When it happens, I reboot the Vertex2 that I have between the AVR and the Projector and, as it forces a new HDMI 'clean' handshake, it always solve the problem and the projector syncs at SDR.

Even my wife notice and knows about it, and when she see a more brilliant washed picture than normal, she says to me: "reboot that thing...".
 
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