Just recently I was notified that my Sonos system had a software update available, so I accepted the upgrade. Ever since then I've had absolutely maddening audio problems.
My TV is a brand new 2017VIZIO SmartCast™ E-Series 65” Class Ultra HD HDR Home Theater Display w/ Chromecast built-in (E65-E1). Basically, the Playbar + 2 Play1s and a Sub have worked fine since I installed everything a month and a half ago, but after the recent Sonos software update I'll be watching TV and the audio will simply stop. It now happens as frequently as every 15 minutes.
Through a lot of trial and error, I found I can get it working again is to turn off the TV and turn it back on. I can also just unplug and replug the optic cable on the side of the playbar. The connection to the TV is an optic cable (obviously) which is definitely clean, the output is Dolby D (I've now tried all audio out options from the TV with no luck), and once again it all worked great until the Sonos software update. One other tidbit... I've also figured out that if the sound is dead and I just quickly go through "recalibrate audio" it will start working again. I'm having a hard time believing that the TV is at fault, but I'd love to hear everyone's thoughts.
Any ideas? This is in our newly remodeled home theatre room and everything has been professionally wall mounted with cable's internally run, etc. It's now be come unusable since it's so unreliable and I've reverted back to simply the TV audio. What a major pain!