I’ve had my Beam for several years, it was previously connected via ARC to a Panasonic Plasma and worked flawlessly (albeit in Stereo). It was primarily used with an Apple TV HD.
Now I’ve got a new LG CX OLED TV and Apple TV 4K, and I’m finding that often, When I turn the TV on, the audio will come out through the internal TV speakers. When this happens, I can sometimes go through the “Setup TV” process in the Sonos app and the TV discovers the sound bar again, but this also doesn’t work some times.
I’ve also tried setting the sound output to Dolby Digital 5.1 in both the TV and Apple TV, but this doesn’t make any difference from what I can tell.
it’s pretty frustrating, so would appreciate any advice.