Originally Posted by jedimastergrant
As you have heard the cables are notorious for not passing a UHD signal even if they are rated to do so. Especially long lengths. I have even had cables fail after working for awhile. So just because they were fine at one time does not mean that they will stay that way. Very frustrating since you can never rule it out. My length is no more than 6 feet which really helps. It would be best to take the UHD player into the room with the projector and use a short cable first. Then use a longer length. Then add in the AVR etc.
I think your projector should automatically detect an HDR signal and switch its mode or at least mine does. So I'm not sure why your colors should look off. Could be the proper signal is not being sent? While the projector is switching there could be a long delay. This can present a problem when setting up a new device because while the projector is going through a lengthy sync time the device could be sending a message on the display that verifies you can still see a picture. Like "if you can see this message press something". But then it defaults to non HDR if no button press. So a few times I have had to press the enter button while the screen is still blank to make sure the device knows that I actually do have a faux K and HDR capable projector.
I don't know about the Xbox since mine is the launch day version and does not have UHD capability. It does have Dolby Atmos though which is totally awesome and worth it more than UHD in fact. So make sure that you get that part of it set up if nothing else.
Do you have a UHD player? I would use that to troubleshoot first thing. That way you know for sure you are actually sending a UHD source. One thing you want to make sure of is that you are checking that you are getting a UHD signal sent from source to display (instead of just looking at what resolution the projector is outputting). So you can check the info button on the JVC for that if it is like mine but I think it is helpful to check the info button on the UHD player to see what it is sending. My Oppo has a button that shows exactly what is being output which is useful.
I would try to bypass the AVR altogether as well and rule that out. I have had compatibility issues with UHD signals with my AVR in the chain even though it is on passthrough for the video signal. When I bypass the AVR it goes through issue free.
I do still have my Phillips 4K player that isn't connected. I could try it, but I'm fairly sure it's the cables now. It does kick into HDR mode when I go to Netflix on the Xbox. The color issue there is just the pictures you highlight to select what you want to watch. Those pictures have odd coloring. However, when you highlight one and the preview plays, that looks fine. And when I play a title, that looks fine too. I have read that the Netflix app always puts HDR mode on, even when you watch SDR content, but I'm not sure that's why those pictures would look that way.
The Zappiti could be moved, but I'd have to drag some external drives with it. I don't think I have any of my 4K files on the internal hard drive. I did unplug and move cables and then put them back, and eventually did get it to output a 4K signal. It did not, however, output HDR. So, I'm thinking it's struggling a bit with the cables. It got to work well enough to do just 4K, but was still limited to 8 bit and not doing HDR. I did try going directly from the Zappiti to the JVC, but that didn't make a difference. So, it seems like it's working well enough with the Xbox to get HDR, but struggling for some reason getting full bandwidth with the Zappiti.
I have ordered new cables that should be here Monday, so hopefully that will work. I got long and short cables so I can handle any part of the change (I hope).
On a side note, when I finally got a 4K signal from the Zappiti, the 3D functionality started working too. That's something that had never worked on the Zappiti, and they were actually asking me to send it in so they could look at it. Maybe my other redmere cables going to the Panny were having the same issue of not providing enough bandwidth. Though, other devices passed 3D through those cables as well, so maybe there is an issue with the signal that Zappiti puts out that requires a better cable.