Unfortunately, Sonos doesn’t have a repair service, either internally, or via ‘authorized’ repair centers. If you choose to seek an external repair shop, there isn’t much Sonos can do. If you choose to ‘trade up’ to a later model, if you haven’t used that up yet, Sonos does offer a discount to a new speaker.
Your best bet would be to call Sonos Support directly to discuss it.
I have a pair of these PLAY:5 gen2s myself, which I listen to daily.
There are 3rd party repair centers in the EU and UK.