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Original thread:
Post 2 made on Monday December 3, 2018 at 19:46
Active Member
July 2008
That extender won't support many 4K resolutions as it's only 10.2 Gbps total bandwidth. What's likely happening is that the TV EDID calling for 4K60 HDR, the AppleTV is outputting that signal, and the Balun is unable to pass it.

You can try connecting the ATV directly to the TV and picking a different, lower bit-rate, resolution, and then moving it back to the head end. But if the AppleTV ever reboots you'll be stuck again.

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