As Dave suggested, keep them playing and they will be maintenance free. They are not meant to be switched off with a dustcover on them. Play a couple of tunes every day. Gavin is also right, you need to own one to fully understand their operation. They are complicated when things do go wrong, but an original valve amplifier in a classic Juke sounds better than a CD Juke.
Ironically, my father owned and operated over 50 Juke boxes - Seeburgs, Rowes and AMIs - and they were top earners in their day. The Americans made Juke boxes to last a lifetime - and as long as you know how to repair and maintain, they will last a lot longer than a DMD pinball or arcade game.
I will be servicing a Continental II in the next few weeks - fully restored and still in the family. I might run a thread on it
