Shortly before Christmas, the 48-in-1 multicade arcade machine I had set up in the kitchen died. I didn’t even get the satisfaction of letting the smoke out of the thing. It just quit working. Whenever troubleshooting an arcade machine, start at the beginning — power. My machine plugs into a power strip that plugs into the wall. I knew the wall outlet was good, so I tested the power strip using my multimeter. 116 volts — perfect. The next place to check power is at the power supply itself. Most switching power supplies put out +5, -5, and +12 volts.… (read more)