.156" Molex connectors are rated for about 25 matings
These connectors were specified for only about 25 plug and unplug cycles. After that, plus decades of vibration, the female pins lose tension and the male plating wears, so the gas-tight contact is gone and new pins are the only real fix.
Systems
Related tips
- Connector parts to keep for System 3-7 games
- Unplug connectors by the housing
- Replace the 3J6 logic power connector
- Removing the old interboard female connector
- Replace CPU board power connector 1J2
- Always replace both halves of a connector
- Replace IDC connectors on Firepower and later with crimp
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)