PINBALL: Repair Bally 6803 Pinball Games 1985-1989.
Bally -35 led stuck on - Pinball Technical and Repair Questions - Aussie Arcade
AlltekSystems
Repairing the old stern sound card sb-300
PINBALL: Repairing Bally, Stern Pinball Games 1977-1985, part two
BALLY MPU Kit Assembly Log
New Eddy Sensor Board Assembly Williams/Bally reference #A-18543-2 & A-18543.1-2 Used on the following games: Red & Ted's Road Show Scared Stiff Theatre of Magic (does not replace the A-18543-1 eddy sensor