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Flippers.com 
Atari Pinball Games - Troubleshooting One problem with late model Atari Pinball games (Hercules and Superman) is the factories use of a single sided printed circuit board for the Power Supply. (We won't talk about leaky batteries just yet) The common issue that develops over the years is fractures of the traces at the rear of the interconnect plugs (Molex) and the game then fails to work correctly. So a simple check on these machines is to remove the Power Supply board and resolder the pins
Atari Power Supply
Atari Power Supply lifted connector
Atari Power Supply cracked traces - J4 in this case. Atarians & Airborne Avengers:- These games used "motor" flipper coils and the process to replace the flipper body shell is to loosen the two set-screws that are accessed through the body of the plastic shell at the fattest part of these shells. Counterclockwise to loosen! Then the shell lifts up off the top of the shaft. A common problem on these games is for someone to plug the solenoid connector to the switch inputs - blowing a number of TTL gates and taking the MPU down in the process. If that was the case then you have to replace all the Switch matrix TTL and a couple of others as well, I find you can often identify these with a Diode Check function on the digital meters. A normal gate is something like 0.500 to 0.800 volts relative to common, a bad gate is under 0.500... |
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