The only issue noted with my Arc installation relates eARC settings. The LG C9 display has eARC capabilities. If "passthrough” is set to “on” and eARC is also "on” then the audio signal from the xfinity cable box persists on the Arc even after turning off the LG display. Since I don't have a need for eARC in my system, I can turn it off without a problem, but it feels like a bug. The Arc replaced a Beam in my system, and the Beam didn't have this problem.
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