Disconnect everything from the TV including the Beam and unplug the TV and Beam from power for a couple of minutes. Plug them both back in but keep everything disconnected. Make sure CEC is enabled on the TV. Then run TV Setup under the Beam’s settings in the Sonos app. Connect the Beam to the TV’s HDMI ARC port when the app instructs you to using the Sonos-supplied HDMI cable. When the Beam has been connected successfully, connect any other device to the TV.
Thanks GuitarSuperstar.
I was having the same problem. Followed your simple steps and I’m fixed.
Cheers!
I completed the above & am still having issues.
I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it.
There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.
When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.