Had a Lethal Weapon 3 (Data East) that after playing for 40 minutes or so, the flippers would go dead. Then you turn the machine off for 5 or 10 minutes and they would work for a while again..hmmmmm
I checked the voltages, and even when the flippers were not working, they had the correct voltage (50V) – also, in the switch test, the cabinet switches were working fine. So i knew the signal was getting to the CPU to fire the flippers, and that there was power at the flippers, so there must be something in the signal out of the CPU that was the issue.
I had a look at the CPU, and there is a relay (RY1) that is part of the flipper circuit. A gentle tap on the top of this, and the flippers would suddenly start working again!!! Replace the relay, and good to go.
