Skip the driver board mods on Baby Pac-Man
Baby Pac-Man's voltage regulator/solenoid driver is a different version. Do not add the C23 ground jumper or the TP1-TP3 jumper on it; the TP1-TP3 jumper shorts its unregulated 12 V to ground.
Systems
Games
Related tips
- Solenoid driver/regulator board test point voltages
- Ground mod for the solenoid return at J3 pins 23-24
- Solenoid driver/voltage regulator board test points
- Solenoid driver board: how the MPU selects a coil
- Solenoid driver board: test points and regulators on the layout aid
- Adding a ground jumper at C23
- Baby Pac-Man and Granny MPUs look for 6 V AC, not 43 V
- Baby Pac-Man solenoid board select lines
Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)