Removing the old interboard female connector
Steps
- Cut the plastic housing away one pin at a time with a utility knife.
- Heat each freed pin and pull it out.
- Clear each hole with a solder sucker; use a desoldering station or vacuum pump rather than wick for the 80 pins.
- Give pins 1-2 and 39-40 extra heat; they are tied ground and +5 V pads with more copper.
Systems
Related tips
- Replace the 40-pin interboard female connector
- Always replace the driver board's 40-pin female interconnector
- 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
- Resolder and inspect the driver board header pins
- Boards pass on the bench with Leon's code but the game is dead
- Board work that cures most intermittent faults
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)