Lets fix a non booting Bally pinball MPU
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Repairing MPU TRACE Problems On A Bally FUTURE SPA Pinball Machine!
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Bally & Stern Solenoid Driver Board Recommend ground modifications - PinballHelp.com
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Pinball machine computer MPU Repair. - Chip and Socket replacement
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Early Bally & Stern mpu & driver boards info & tips
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Repairing an acid-damaged Stern MPU-100, Bally 35 board - PinballHelp.com
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Extreme Corrosion Repair & PCB Hackery - Stern's 1977 Stingray Pinball Machine
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How to test a Bally MPU out of the game to see if it works
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