Maybe see if the things mentioned here will get Alexa working again for you…

https://support.sonos.com/en-us/article/alexa-commands-not-working-on-sonos

Thank you for your quick reply ken.

I'll have a careful read through tomorrow, as run out of time tonight ;)

Still haven’t looked yey mate.

Decorating has gotten i the way 

it might be related to a change in country availability for your SONOS system
https://support.sonos.com/en/article/amazon-alexa-availability-on-sonos

it works if you just change your address to one in a supported country - you need to supply a credible phone number without the country code

Cheers Albert.

I haven’t moved anywhere lately though. 

Is it because I have a constant green light that you came to that conclusion?

Hello @foxleybob and all,

We have released an update for S1 that we believe addresses this issue. Please check your system for updates and test.

If you continue to see this issue after updating, we recommend you get in touch with our technical support team for assistance.

Thank you for your patience.

I can confirm the update has addressed the issue for me. Thanks much @Sonos 

Edit

that constant green light has now changed to a slow flashing green light.

have found my old S3 so hopefully get it fitted up, then will contact support tomorrow as advised.

In the meantime, if anyone has ideas of my problem, Pleasae contribute to this thread.

Many thanks 

Bob

Bob,

It sounds like you may have factory reset the device - I say that because of the information shown here in this link…

https://support.sonos.com/en-us/article/sonos-led-lights

Thanks for the quick reply Ken.

I must need to go to Specsavers as I didn’t notice (or look properly) at the info you linked me to.

Anyway it makes sense as I have factory reset it, so now I have to  get it up and running.

Being oan old git, I’m not sure how yet.

Bob, 

Is it your one and only Sonos product, or do you have any other Sonos devices?

No, I also have an old white Sonos3 which my daughter gave to me.

It has been working oK until now.

Bob, 
Power off your speaker with the flashing green light.

I would (temporarily) wire that white Play: 3 speaker to your local router with an Ethernet cable. Open your Sonos App on your smartphone connected to the WiFi network of that router and ensure your App sees that Play:3 speaker. Note your smartphone must meet the requirements shown here:

https://support.sonos.com/en-us/article/sonos-app-requirements
 

If all is okay at this point, goto ‘Settings/System/SystemUpdates’ in the Sonos App and check for any updates… (you may need to check this twice to get all the updates).

When all has been updated. Power ‘on’ your Sonos One/Play: 1 speaker and when it’s light is flashing green, in the Sonos App goto ‘Settings/System/Add Product’ and follow the onscreen instructions to add that speaker to your Sonos system - it too may install an update during the setup.

When that’s all done you now may have to add your routers WiFi credentials to your Sonos system.

See this Sonos support link if you do need to do that….

https://support.sonos.com/en-us/article/connect-sonos-to-a-new-router-or-wi-fi-network

If that doesn’t work for you then try this Sonos support link. (You just need the section where it mentions "Switch to a wireless setup”)

https://support.sonos.com/en-us/article/switch-sonos-between-a-wireless-and-wired-setup

When complete, you can uncable your wired Play:3 speaker from the router and move it back to where it was before and then hopefully all will be up and running for you. 

Hope the above information assists.

Wow, that’s very helpful ken, thank you very much.

I will have a go tomorrow now, as got friends turn up.

I’ll let you know how I get on.

Thank you again.

Bob

well, I decided to call Sonos support in the end.

spoke to a foreign gentleman for ages (he was very patient) and managed to get it up and running.

so up & running now thankfully.

Thanks for the replies Ken.

Ah, glad you got it sorted Bob .

Erm, stopped working again.

Not sure if I can remember what th guy @ Sonos told me, but I’ll try to get it going again.
Although what made it stop?

I guess I’ll have to phone them again.

Bit of s pain..

Before calling Support maybe try a reboot of the speaker and then, if that doesn’t fix it, go onto disable/enable the Sonos skill in the Amazon Alexa App.