[cameroncf]

Early 80's, when I was 6 or 7, my best friend had a pinball machine in his basement. The front door "hatch" to it was unlocked and we spend countless hours poking the insides with a long screwdriver to trigger various component. Probably wasn't safe but it sure was fun!

[joezydeco]

The machines from that era had 75 volts DC sitting around unprotected at the lugs of the solenoid coils.

One hand on the screwdriver and the other hand touching a grounded coin door would have been pretty serious. You were lucky.