Every System 1 card-edge connector needs re-pinning

The boards use crimped .156" Molex card-edge connectors with contacts on one side, rated for only about 25 insertions. Age, vibration and battery corrosion mean all of them should be re-pinned for reliability. System 1 never used IDC connectors; IDC plugs mean parts were transplanted.

Systems

• Gottlieb System 1

Related tips

• Re-pinning a crimped card-edge connector
• Pins and tools for re-pinning System 1 connectors
• System 1 CPU board connectors
• System 1 driver board connectors
• Connector parts to keep for System 1 repairs
• Soldering wires onto System 1 replacement connectors: tape the parts to the glass
• Gottlieb board and connector numbering
• CPU connectors that fail most

Source: Gottlieb System 1 Pinball Repair from 1977 to 1980, Clay Harrell (pinrepair.com)