Making new interboard male pins long enough
New square .156" male headers are shorter than the original round pins. Use the extra-long Molex 10-01-2270, or solder standard ones with the tips barely through the board and then press the plastic strip down against the board, which gains about 1/8" of pin length.
Systems
Related tips
- Double-solder the CPU board male header pins
- Always replace the driver board's 40-pin female interconnector
- Freezes mid-game and blows solenoid fuse F2: clean and reseat the 40-pin interconnect
- Damage after the black and white plugs were swapped
- Replace CPU board power connector 1J2
- Boards pass on the bench with Leon's code but the game is dead
- Board work that cures most intermittent faults
- Random lockups from the 12 V logic pin
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)