Hello,  
I’ve a Sonos Play 5 Gen 1 from a friend for repair. It died and he replaced it already with some Symfonisk models, but we would still like to safe it from the landfill and use it in the garden. 

Up on first inspection I found a series of bad caps at the output stage (replaced), 2 on high voltage side (replaced) and one after the 24v conversion (replaced)   Now it generally works again, but it keeps lowering the volume after some time. 

Since this seems to be a software protection thing I would appreciate it if some diagnostic could be shared so I can get an idea of what to check else. 

Thank you very much. Appreciate it when companies also support the repair community. 

Moderator Note - Removed diagnostic from post.