Quoted from Flippingr8:Plugged something into service outlet and it doesn't work.
Sounds like the issue is at the power cord or where it comes into the machine. The first thing the power goes to is the service outlet before even going into the power supply.
TNT Amusements talked about this issue a few months ago (it was also a Munsters) and it's a simple fix.
(Starts at the 8:50 mark.)