Pinball Tips

Game Plan Switch Matrix Chart

Gottlieb Drop Target Removal / Installation Quick Guide (EM and early System 1)

Gottlieb Drop Target Removal / Installation Quick Guide (later System 1, System 80/80A, and most earlier System 80B)

Gottlieb Free Play Modification

Gottlieb Sound Card Pin Connections
(Not really a tip, just an interesting reference.)

Gottlieb System 80B Ground Modifications

Gottlieb System 80/80A/80B Switch Assignments Not Listed on Switch Matrix Page

Gottlieb Roto Unit Adjustment

Bally CPU Cheat Sheet (Pinouts for CPU Board in PDF)

Bally Rec Board Cheat Sheet (Pinouts for Rectifier Board in PDF)

Stern (Classic) Service Bulletin 15 - Display Repair Procedures (PDF)



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