Have you tried unplugging your TV and Playbar from power for about a minute or two to see if it fixes the problem?

I’m experiencing the same issue since purchasing a Sony KD-75X9500H using an Optical cable to connect to my Sonos Playbar. It cuts out for about 3 to 4 seconds every minute or so. My Sonos Move doesn’t cut out, obviously because it’s not connected via the optical cable to the TV.

I’ve checked the optical cable is connected and not damaged. 

I’ve tried power cycling both devices. 

As above:

If I unplug the optical cable from the Sony TV (TV power is off) the playbar does not cut out and plays continuously with no problem.

The playbar does not cutout when the TV is on and audio optical cable is connected with the TV sound coming through the playbar..

Has anyone found a fix for this? (Other than removing the optical cable which means the TV sound doesn’t work on the speaker!)

thanks 

Not a fix but I did get some workarounds you can try. I haven’t tested the workarounds yet, Sonos support just gave them to me today.

They did acknowledge that this is a known issue with some new Sony TV’s but I didn’t get any info on a resolution before my chat was cut off. 

From Sonos support:

There's a certain issue we've been tracking with some Sony TV's which is causing this. Could you head into the Sony TV's settings and check for software updates if your TV is connected to the internet? 

There are some workarounds that we can apply to alleviate the issue that we have seen work for other users with the same issue. On the TV, could you try changing these settings for us?
Turning on IP Simple Control
Open Settings
Go to Network and Internet
Go to Home network
Go to IP control
Go to Simple IP control
Toggle On 

Setting  RS232C Control to "Via Serial Port"
Open Settings
Go to Remotes and Accessories
Go to RS232C Control
Set it to "Via Serial Port" 

I’m having the same issue (Sony XBR-85X950G) - all audio sources play fine on all speakers, except the playbar. If a non-TV source is playing, audio will cutout at the playbar. When playing the TV source all speakers play perfectly. If I unplug the optical cable from the playbar, no speakers cutout.

 Did any of the suggestions work? I’m trying them now.

I would perhaps enable the two suggestions anyway … see the links to the YouTube videos below:

Turning on IP Simple Control
Open Settings
Go to Network and Internet
Go to Home network
Go to IP control
Go to Simple IP control
Toggle On 

https://youtu.be/VXDYspxEClg

Setting  RS232C Control to "Via Serial Port"
Open Settings
Go to Remotes and Accessories
Go to RS232C Control
Set it to "Via Serial Port" 

https://youtu.be/StZc22GENe8

Thanks bud, I enabled the settings yesterday and so far no cutouts. I’ll give it a week and report back.

I was experiencing cutouts when my Sony’s audio output was set to Auto 2.  I changed it to Auto 1 and so far no problems.

I spoke to soon, the cut out started back up again last week.  I think it might have been caused by a software update on the TV. Tried the other outputs with no luck.   I’ll try Ken_Grifiths suggestion and report back.

Thank you all! I thought I was going crazy. How can a TV optical audio input cause a problem with my Sound bar when the TV is off? I thought I was being gas lighted by someone!

I have the EXACT same issue on my new Sony XR-55A80CK. I was on with SONOS (not Sony) support today and they took my waaaay down a wrong road and conviced me it was insufficient band width on my WiFi. Turns out is is not as the problem persistes even with the Soundbar hardwired to the router but, as has been pointed out, the problem disappears when the optical  audio cable is removed. It definatley appears to be a SONY not SONOS problem and I look forward to a solution from them. In the meantime, I will try the workaround cited above.

Thanks all.

Just an update on the above Sony supplied work around. It WORKED! I changed the settings on the Sony TV as suggested above and I no longer have the music cutting out issue. Thank you, Ken Griffiths, for posting the solution here! Now if only I could get the Sonos to respond to the volume control on my Apple TV remote, I’d have nothing to occupy me all day!

Perhaps see if this support link might assist you to resolve the issue with the Apple TV remote.

https://support.sonos.com/s/article/3403

Hi. I have the same issue with a new Sony TV connected to my old Sonos bar when playing music via Spotify (TV off). Pulled the optic cable and problem fixed - well, not really. My Sony TV did not have the RS232 setting but turning on “Simple IP Control” seems to have fixed the problem: 

• Open Settings
• Go to Network and Internet
• Go to Home network
• Go to IP control
• Go to Simple IP control
• Toggle On 

I’m curious about ARC’s TV Autoplay setting. If Autoplay is enabled and the TV spits out an extraneous block of data on its optical output, ARC will switch to the TV.

What a crazy combo BUT IT WORKED!

Glad I stumbled across this thread after getting annoyed at my Playbar dropping out regularly when streaming music. All other devices stream without issue.

I have a 3 year old Sony TV (don’t know the model) connected by optical. My TV doesn’t have RS232C controls but I did change the IP Simple Control and for the last 3 hours had no drop outs.

Fingers crossed that’s all it is.

Kudos to those providing the solution and others who confirmed it worked for them.

hi everyone, I think I am am having a similar problem but its when im watching a movie and a loud action sequence happens. There is an extremely loud ‘clacking’ noise and the screen goes black and the sound goes off, my only fix for this at the moment is to turn the volume down but it shouldn't do this. would the above fixes apply? its too early in my flat to try this so I am just asking on here before I try tonight. thank you so much in advance Ian 

It sounds like a different problem, but maybe give it a go and just see what happens with your TV. If the issue continues, then it maybe best to submit a Sonos system diagnostic report from within the Sonos App and note it’s reference and then contact/chat with Sonos Support Staff via this LINK  and see what the Staff can perhaps suggest to resolve the matter.

All was good until I upgraded my TV to XR-55A80L.  It is a great TV, but it has the same issue as above.  Intermittent cutting out on the SONOS home cinema set up when streaming radio or music when the optical lead is connected. All is fine when disconnected, and it works fine in another room when a stand-alone speaker (Sonos).  So, there is no question it is a compatibility issue with the Sonos kit and the new TV.  I have cycled all items, and it has not been resolved.  I have good wifi across the house, and a speed check indicates it is good in the room with the TV - it worked fine before the TV upgrade. 

If you have found a solution/workaround please do share 

many thanks

Did you try enabling IP Simple Control and changing the RS232C Control to "Via Serial Port”?

Thank goodness for this thread.  I have enabled the IP Simple Contol l, and it worked!! 

Many thanks to all

Hello everybody! I have the same problem with a TV LG OLED 77A19. Did you know how to find the IP simple control? Thanks in advance

I followed the advice above to reset my Sony TV, there are a couple of solutions if you google it for the LG OLED 

Hope you find a solution 

It only applies to Sony TV’s - LG TV’s are normally set to ‘Pass Through’ on the connected HDMI2 (ARC/eARC), or Optical port.