Connect - no sound

I’ve submitted diagnostics, number 790132414

Hi @Kcontzen.

Welcome, thank you for reaching out to Sonos Community and providing the diagnostic report since you already tried all troubleshooting steps let me help you further.

Try unplugging all Sonos devices from power, then reboot your router. Once the router comes back up, plug your Sonos devices back in.

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

Hi - thanks for the help! I’d tried rebooting the components but not all together in this order. I just did that and the problem seems unchanged, audio everywhere except from the connect. Redid the diagnostics at number 1788861698

Have you tried switching the connect line audio-out from ‘variable’ to ‘fixed’, or vice versa - make sure the volume level on the receiver line-in is not set too high before trying it.

Yes, I’ve tried variable, fixed and pass-through and there’s no change. 

The Connect could have a failed analog output stage. It’s known to happen. One option is to put a cheap DAC on one of the digital outputs instead. 

I will assume you have already checked the lead/connections, as it’s quite clear you already know what you are doing with these devices. But… have you tried a factory reset of the Connect? I have seen that fix this type of issue when mentioned on some old threads here in the past.

I only have the one connect; the others are amps so they don’t have a line out or digital audio outs. 
edit - responding to an edited comment so just ignore this

Just tried the factory reset and that hasn’t changed anything. I don’t have a toslink cable available but I’ll pick one up and try the digital out. 

As a temporary measure, try using one of the RCA analog cables to connect the digital coax out to a suitable input on the receiver. So long as it’s not very long it should work, at least as an experiment. 

Ah sorry to hear that. It was worth a try at least. If the connected Receiver does have a digital input (coax, or toslink) that seems to be the next step, I guess.

It works!!! So it seems the analog out has failed?

Now I have a new problem - the audio isn’t synced with the amp outputs. I’ve tried playing with the audio delay but I can’t get them to line up. With all delay settings the same, the speakers connected to the Sonos amps are ahead of the the connect optical output.

The receiver is doing audio processing, incurring a delay. See if it can be disabled, via a ‘direct mode’ or some such.

BTW I’d recommend moving to a proper digital coax cable if you’re going to stick with using that Connect output. 

There’s an improvement but it’s still not good enough for listening... Maybe getting different amps to play together was a fool’s errand from the start 🤣

Thanks to everyone for your help here, it wouldn’t have occurred to me to check that the line out had failed!