Bulb spares: #44 for CPU lamps, #47 for general illumination
Keep a stock of #47/#44, #555, #906 or #912 and #89 bulbs. The #47 runs cooler and draws less current, which eases the load on GI wiring and connectors, so a common split is #47 in the GI and the brighter #44 in the CPU-controlled lamp sockets.
Systems
Related tips
- Bulbs to keep on hand for WPC games
- Bulbs worth keeping on hand for a System 11 game
- Bulbs to stock for a 6803 game
- Which bulbs System 3 games take
- The bulb next to the solenoid expander board must work
- CPU flipper enable relay RY1
- Diode orientation on #44/47 lamp sockets, and 555 sockets
- Solenoid fuse F2 blows at power-up as every coil fires: CPU blanking circuit
Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part One, Clay Harrell (pinrepair.com)