50 volt flipper power supply on the last three System 7 games

Firepower II, Laser Cue and Star Light have a separate flipper power supply board in the backbox that turns 48 VAC from the transformer into 50 VDC for the flippers only; the other coils stay at 28 V.

Systems

• Williams System 7

Games

• Firepower II
• Laser Cue
• Star Light

Related tips

• How flipper power is routed by generation
• Three flipper mechanism generations
• Second-generation flipper rebuild: assemblies
• Where flipper power comes from
• System 3-7 flipper coils are series wound
• Weak flippers
• Power at the flipper coil but no flip
• Converting System 3-7 flippers to WPC-style mechanisms: main parts

Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)