Which bulbs System 3 games take

Playfield general illumination and CPU-controlled lamps take #47 or #44 6.3 V bayonet bulbs; #47 draws less power, so prefer it (about 75 covers most games). Backbox GI uses #555 6.3 V wedge bulbs. Flashers are #67 13.5 V bayonet bulbs.

Systems

• Gottlieb System 3

Related tips

• Bulbs worth keeping on hand for a System 11 game
• Bulbs to stock for a 6803 game
• Bulbs to keep on hand for WPC games
• The bulb next to the solenoid expander board must work
• Bulb spares: #44 for CPU lamps, #47 for general illumination
• Five flashes only: U12 timer or open R113
• Solenoid fuse F2 blows at power-up as every coil fires: CPU blanking circuit
• CPU flipper enable relay RY1

Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)