Replace burnt connectors on both halves

Check every connector for heat damage. Where one is burnt, renew the header pins on the board and the crimp pins in the housing together; replacing one side lets the old part ruin the new. With IDC connectors the housing must be replaced whenever any pin is.

Systems

• Bally MPU AS-2518-17
• Bally MPU AS-2518-35
• Stern MPU-100
• Stern MPU-200

Related tips

• Burnt rectifier J3 pins 8 and 17
• AS2518-18/-49 connector functions
• Which boards use .156" and .100" connectors
• Key new connector housings
• Connector housings and pins to keep on hand
• Check the mating connectors after a corrosion repair
• Pre-Xenon rectifier board outputs by connector
• Burnt pins at solenoid driver J3

Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)