Replace the 40-pin interboard female connector
Steps
- Get four 10-pin bottom-entry female connectors (09-62-6104 or 09-52-3102); the factory used five 8-pin sections.
- Desolder the old female connector from the driver board.
- Fit the new connectors and solder them.
- Leave the male pins on the CPU board unless broken or corroded; clean them with a small wire brush instead.
Systems
Related tips
- Removing the old interboard female connector
- Always replace the driver board's 40-pin female interconnector
- Replace CPU board power connector 1J2
- Resolder the driver board header pins
- Resolder and inspect the driver board header pins
- 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
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)