Always replace the driver board's 40-pin female interconnector
The female pins of the 40-pin connector joining the driver board to the CPU board are rated for about 25 insertions, and vibration wears them faster. Worn pins cause dead games, lockups and resets, so replace the whole female connector whenever the driver board is out.
Systems
Related tips
- Replace the 40-pin interboard female connector
- Resolder the driver board header pins
- Removing the old interboard female connector
- Making new interboard male pins long enough
- Double-solder the CPU board male header pins
- Slingshot kicker never fires from its switches: loose pin at 2J13
- Freezes mid-game and blows solenoid fuse F2: clean and reseat the 40-pin interconnect
- Damage after the black and white plugs were swapped
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Two, Clay Harrell (pinrepair.com)