Beam randomly plays a few seconds of sound from TV (?) despite TV being off

Hi @Neithal.

Welcome, thank you for reaching out to Sonos Community, We appreciate your time and effort in posting your concern here in our community.

Have you already tried to unplug & plug the hdmi cable into your tv?

I’d also be tempted to do a network refresh, by unplugging all Sonos devices, then rebooting the router. When the router comes back up, plug back in the Sonos devices. 

Let us know if it works. If you need help with any other information, please be sure to let us know.

Do you use a set top box for TV? If so, do you turn it off when you turn off the TV?

I have exactly this issue after a recent firmware update on the TV. 

I’ve rebooted router. 
 

There is an Apple TV, PS4, Cable, Blue Ray Player all connected but the random sounds seem to be coming from the actual inbuilt TV channels of the TV. 
 

it prevents me from using the beam as a speaker playing music whiLST TV is off as the noise interrupts played music and then when the noise stops, silence. 
 

Or it just comes on when everything is off

I also have an ambilight tv + beam and have the same issue. Yesterday I disconnected the beam from the TV to see if it it still happens, hasn’t happened yet.

I seem to be having exactly the same issue… Beam connected to a Philips Ambilight TV and at least once a day for about 10 seconds, the sound starts playing very loud as though the TV is on even though it's off and often has been for some time. I've checked and it's not even playing sound from the last selected channel and has went off during the middle of the night. 

Hi @G00D4ll.

Welcome, thank you for reaching out to Sonos Community, We appreciate your time and effort in posting your concern here in our community.

Have you already tried the option like @mwmw did, by disconnecting the beam from the tv?

How often do you encounter this kind of issue?

If you need help with any other information, please be sure to let us know.

Hi Mark,
 

The purpose of buying the beam was to be used as TV speaker as well as to stream music to it. I've tried unplugging and reconnecting, but the issue still occurs

It looks like this is Philips -specific. Does the TV look for updates at a certain time and therefore turn itself (at least partially) on? Could the problem be cured by turning off the automatic update function on the TV?

Philips support suggested reinstalling the tv firmware - I did this 2 days ago and haven’t had the issue yet; will post again if it does happen.