Testing a fuse
Steps
- Switch off and unplug the game.
- Look at glass fuses for a melted or broken element; ceramic fuses cannot be judged by eye.
- Lift one end of the fuse out of its holder (or remove it) so the circuit cannot give a false reading.
- Check across the fuse with a meter or test light: continuity means good.
- Confirm the amp, voltage and fast/slow rating stamped on the end cap match the holder label.
The power cord, main fuse, on-off switch, transformer primary and service outlet carry 110-120 V line voltage, which can kill. Unplug the game first.
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
- Fuses to keep for EM games
- Checking a fuse properly
- Testing a fuse properly
- Where EM fuses are
- Test every fuse out of its holder
- Fuse rating rules
- Testing fuses with a meter
- Use the exact fuse type and rating
Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)