If you've ever had a machine reset or go to game over when you hit a flipper
button, here's what could be going on.
You've definitely got a problem in the flipper circuit. You likely have a
short somewhere. If you have a diode on the coil check the diode. If you
have a bridge rectifier on the circuit, verify that it is good. You may
also want to check the resistance of the flipper coil. Normally it should
have some resistance, perhaps as low as 3 ohms. If not, your coil may be
shorted.
By the way this problem has occurred on both electromechanical and solid
state machines.
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