Bulbs to keep on hand for WPC games

Stock #44 or #47 bulbs (the #47 runs cooler and dimmer; a common choice is #44 for the lamp matrix and #47 for GI), #555 wedge bulbs, #906 or #912 and #89 flashers. Two games, Creature from the Black Lagoon and Twilight Zone, also need #86 bulbs. Blinking bulbs (#455, or the wedge-base #545) appear in just three games: No Good Gofers, Addams Family and Twilight Zone.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• Bulbs worth keeping on hand for a System 11 game
• Bulb spares: #44 for CPU lamps, #47 for general illumination
• Diode orientation on #44/47 lamp sockets, and 555 sockets
• Bulbs to stock for a 6803 game
• Which bulbs System 3 games take
• The bulb next to the solenoid expander board must work
• Five flashes only: U12 timer or open R113
• Solenoid fuse F2 blows at power-up as every coil fires: CPU blanking circuit

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)