Beam + 2 Play1s + boost connected to a 2018 Philips 55PUS6703 TV. That is one running the 'proprietary' Philips software, not Android TV. Both TV and Sonos are updated to the latest software. The Beam is connected to the ARC HDMI and works perfectly.
However, the beam is not found when switching the TV on - need to select audio out - and when looking at the TV settings it doesn't 'see' the TV. The way to fix this is to unplug all the other HDMI devices, turn the TV off for a minute or so, turn it back on and the TV will be recognised and is - according to the app - now connected.
That doesn't last. When switching between input devices (i.e. from Apple TV to digital decoder) or when turning the TV off and back on, the connection is lost and you will need to manually select audio out again. Sometimes you will find that the TV has magically selected the headphones as the output channel (no headphones attached) and sometimes it will still show HDMI sound system, but you have to deselect and reselect to get audio.
Easylink is enabled. I have tried multiple HDMI cables. My guess is that there is a software bug in the Philips system, so I am contacting them as well. I have 30 days to decide whether to keep this TV, so it would be great if anyone had a work around or a solution. Since I really want a Philips TV (ambilight), can anyone say if this problem is solved if moving to a full Android TV version?
Diagnosis submitted under number 1042646187