Signal dropouts with Apple TV 4K
I'm having a frustrating problem with my RS400 and an Apple TV 4K. I've been trying to troubleshoot this for a while but so far I haven't hit on a solution, though I've narrowed it down. I'll summarize here.
JVC RS400 projector, Sony STR-DN1080 receiver. Sources include Apple TV 4K, Oppo UDP-203, Dune Solo 4K. All sources are connected to the receiver with high-speed 6-foot HDMI cables.
An 11-year-old 25-foot Monoprice non-high-speed HDMI cable, run from the receiver to the projector, works fine with all content and all sources, but it won’t pass 4:4:4 so all sources have to be configured for 4:2:0.
A new 25-foot Monoprice high-speed HDMI cable passes 4:4:4 and works fine with all sources except the Apple TV. With the ATV there are intermittent signal dropouts and glitches regardless of content. It happens with 4:4:4 and 4:2:0, it happens with HDR and SDR, it happens with 2160p and 1080p and 720p.
Replacing the 25-foot new Monoprice cable with a 6-foot new Monoprice between the receiver and the projector does not solve the problem. The same dropouts are seen (so the cable length and the cable itself seem not to be issues here).
But running a new cable directly from the Apple TV to the projector, bypassing the Sony receiver entirely, eliminates the problem. Unfortunately that’s not a practical solution because I need the switching and audio decoding that the receiver provides.
I have a “Genius Bar” appointment scheduled with Apple to ask about this but I think it’s unlikely they’ll be able to reproduce the problem without my unique device configuration. I’d like to just try a new unit in case mine is a little flakey, but Apple won’t do that.
If someone here has suggestions about how to proceed, I'd appreciate the advice. Using 4:2:0 instead of 4:4:4 isn’t horrible but it’s not the best, and it really shouldn’t be necessary.