JP1 Remotes

After 3 years of faithful service driving a pair of Wharfedale bookshelf speakers at background volume levels, my Sonos Connect Amp as gone mysteriously silent - yes I have checked, the mute function is not enabled
Would anyone here have any schematic diagram info for the Sonos unit?

Hi, My apple TV 1 remote has died, can I replace it with a One for all or similar? I have a Sony blu ray, TV and AV receiver, so perhaps the replacement remote could control all four pieces of kit? Many thanks.