Lamp connector housings on the boards are browned or melted and lamps flicker or drop out.
Burned lamp connectors on a solid-state game
Cause: High-current lamps such as #44 overload the connector pins, which heat and burn.
Checks
- Look at the lamp circuit connectors for discoloured plastic.
- Check which lamp type is fitted in the sockets.
Fix
- Repair or replace the burned connector and header pins.
- Fit lower-current #47 lamps to reduce the load.
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
Related tips
- Solid-state lamps out from bad connectors or header pins
- Checking and reseating solid-state board connectors
- Label solid-state head connectors before unplugging
Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)