Fuse values to keep on hand for System 3-7
Buy 250 volt fuses, not 32 volt automotive ones; slow-blow fuses are type MDL and fast-blow are type AGC. Values that cover most System 3-7 games: slow-blow 1/4, 2.5, 4, 5, 7, 8 and 10 amp, and fast-blow 10, 15 and 20 amp. Keep about five of each.
Systems
Related tips
- System 3 fuse chart
- System 4 fuse chart
- System 6 fuse chart
- System 7 fuse chart
- Main line fuse for System 3-7
- Where the flipper fuse is by generation
- Add fuses to the inputs of the backbox bridges
- Pull the coil and lamp fuses for the first power-up
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part One, Clay Harrell (pinrepair.com)