Replace CPU board power connector 1J2
Steps
- Remove the nine-pin .156" round-pin header at 1J2 and fit a new square-pin header.
- Replace the housing pins with new .156" Trifurcon crimp pins.
- On Firepower and later, replace the IDC housing with a crimp housing.
Systems
Related tips
- Burnt GI connectors on the power supply (System 7, Hot Tip, Lucky Seven)
- Replace the 3J6 logic power connector
- Ground mod step 2: repin the power supply to CPU power cable
- Burnt +5 V output connector on the 80B power supply
- Connector stock for burnt-connector repairs
- Use crimp-on pins, ideally trifurcon, when re-pinning connectors
- Molex crimp pin part numbers
- Replace the 40-pin interboard female connector
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)