Tv sensor is partially obscured, but thought the Beam IR receiver would pass remote control though to TV.
With a Sony Bravia TV.
Best answer by Hi-fi_lo-fi
I found the fix shortly after raising it. See below from another thread.
Raised this problem myself but think found fix.
Go in via sonos app, settings>room settings>RoomName>TV>Remote control.
This got Beam IR to recognise remote control for volume changes.