Trouble playing AV Components through Sonos Port Line-In

Sorry if this is a stupid question, but if it works through the Amp line in, why don't you just use that?

good question! I’ve got all the Amps in a dedicated network area of the house. The older stereo equipment is in a different area and hence the need for a Port.

What is the model number of the A/V receiver?

A few things, probably none of them as ‘the’ answer.

Are the Sonos5 in your original post PLAY:5s, or Sonos Fives? There is no Sonos5. 

Are you running S1 or S2? I’m thinking S2, because of the Port, but would like confirmation, please. And S1 devices can’t ‘talk’ to S2 devices, and vice versa.

Can you see all the rooms in the one controller at the same time?

Please don’t ‘reset’ anything going forward, unless instructed to do so by Sonos. It rarely fixes any potential issue, and always wipes any diagnostic data that might assist a Sonos employee in helping you. 

Have you checked the wifi interference FAQ? Line ins, being often ‘denser’ than a standard music stream, will be more sensitive than average to this potential. 

Have you tried wiring the Port with a temporary Ethernet cable back to your router? Or moving it, again temporarily, back closer to your other devices?

Finally, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Can you manually select the Port’s line-in from another speaker and get it to play?

“Can you manually select the Port’s line-in from another speaker and get it to play?”

No - I can see the Port’s line-in, but it does not allow me to select it.

Hi Airgetlam, have added answers below:

Are the Sonos5 in your original post PLAY:5s, or Sonos Fives? There is no Sonos5. Sonos Play 5

Are you running S1 or S2? I’m thinking S2, because of the Port, but would like confirmation, please. And S1 devices can’t ‘talk’ to S2 devices, and vice versa. S2 latest version

Can you see all the rooms in the one controller at the same time? Yes

Please don’t ‘reset’ anything going forward, unless instructed to do so by Sonos. It rarely fixes any potential issue, and always wipes any diagnostic data that might assist a Sonos employee in helping you. OK - I had no idea about this, thanks for letting me know!

Have you checked the wifi interference FAQ? Line ins, being often ‘denser’ than a standard music stream, will be more sensitive than average to this potential. 

Have you tried wiring the Port with a temporary Ethernet cable back to your router? Or moving it, again temporarily, back closer to your other devices? Yes - It’s hard wired in to the router, same result

Finally, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Thanks

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

What is the model number of the A/V receiver?

I’ve tried a few external components:

Technics CD Player

Yamaha turntable

Cheap Amazon CD Player

The main thing to note is that if i plug any of those components to the Amp’s Line-in, they work perfectly. It’s just not working with the Port Line-in

Problem resolved! Turns out it was something simple… The Port had a slightly newer software version compared to the other Sonos Products. Once I performed an “All software update”, everything worked, I should have checked this first! Thanks all for your suggestions and help. 

Sonos should look into adding a prominent warning pop-up if the App detects software/firmware version mismatches.

One or more Sonos components need an update.

Please run a manual update as soon as convenient.

Some system functions may not operate properly.