So last night I opened up one of my S+ machines to empty the coin hopper.
Closed it up and turned it on via the power strip and heard a slight pop and nothing shows on any of the displays.
Opened the door to see if I could see anything and after looking for a while, I noticed a black wire had come out of the coin comparitor plug and was touching metal.
I looked at another one of my S+ coin mech to see where the black wire went on the plug and put it back and fired it up again, but still nothing on any display.
MPU fried?