I just bought an ARC for the the living room so I moved the Beam to our bedroom.
The bedroom TV is a Samsung 43" Class TU7000 (un43tu7000fxza). The ARC port is labeled eARC and that's what it's plugged into, from what I understand that should work. My Beam is the only thing plugged into the it and it's the same cable that was working with my Sony TV in the living room.
HDMI eARC mode is enabled along with Anynet+ (HDMI-CEC). I've hard power cycled both the beam and tv, both unplugged and plugged in, I've also factory reset the beam and that did not resolve the issue.
I can mange the beam with the Sonos app and am able to play music on it, but when running the connection troubleshooter on the Sonos app it's telling me CEC is not connected.
Any and all advice is appreciated, thank you!