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I have AppleTV 4K connected to Sony XE9005 TV via HDMI 2 port (HDR enabled).

The TV is flashing in white periodically (like each 3 minutes or so). AppleTV automatically chooses 4K HDR and it picks Chroma 4:2:0

The HDMI cable is the one that Apple sells in the stores from Belkin.

Any ideas what is going on? Or just crossing fingers and hoping that a new update is going to fix it?

  • I'd try a different HDMI cable, if you have one, to see if the cable is the problem. – IconDaemon Dec 10 '17 at 15:00
  • @IconDaemon I am using the expensive one from AppleStore and it is recommended by them for AppleTV 4K – Chiron Dec 10 '17 at 15:01
  • Expensive does not equal performance. It should be at least have the HDMI High Speed specification. Because the cable is a physical object, it is also subject to damage, some of which might not be visible. – IconDaemon Dec 10 '17 at 15:08
  • Reading the comments on this page leads me to believe that the newer HDMI standards (4K in particular) do require a better-than-average physical construction because the data has greater bandwidth needs. A poorly shielded cable, or one with less than stellar connectors and internal construction, will affect the bandwidth of the signal, which will lead to degradation. – IconDaemon Dec 10 '17 at 15:30
  • @IconDaemon my cable is braided with another HDMI cable of PS4 Pro. Plus, AppleTV is very close to the PS4, should I put it away a little bit? Or is it possible to shield the cables from each other – Chiron Dec 10 '17 at 15:34

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