Several lamps are out together.
A group of lamps is out
Cause: A blown fuse for that lamp circuit.
Checks
- Find the fuse from the backbox fuse chart or the board layout.
- Pull it and test it for continuity with a meter; blown fuses often look fine.
Fix
- Replace with the same rating and type.
Switch the game off before pulling fuses or touching the transformer area.
Systems
- Williams System 3
- Williams System 4
- Williams System 6 / 6A
- Williams System 7
- Williams System 9
- Williams System 11
- Williams System 11A
- Williams System 11B
- Williams System 11C
- WPC Alpha-Numeric
- WPC Dot Matrix
- WPC Fliptronics
- WPC DCS
- WPC-Security (WPC-S)
- WPC-95
- Bally MPU AS-2518-17
- Bally MPU AS-2518-35
- Stern MPU-100
- Stern MPU-200
- Bally 6803
- Gottlieb System 1
- Gottlieb System 80
- Gottlieb System 80A
- Gottlieb System 80B
- Gottlieb System 3
- Data East CPU Version 1/2
- Data East CPU Version 3
- Data East/Sega CPU Version 3b
- Capcom
- Electro-mechanical
Related tips
- Group of lamps out
- Several lamps light together
- Driver board A3-J3 lamp groups and relays
- LED replacement lamps
- Use #47 instead of #44 lamps to save artwork
- Fewer and cleaner backglass lamps
- #555 and #259 wedge lamps
- Groups of four lamps or single lamps misbehaving
Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer