Replacing a solenoid coil
Steps
- Unbolt the burned coil and fit the replacement in the brackets, letting the old one dangle on its wires for now.
- Move the wires one at a time from the old coil to the same lug on the new coil, so none are left loose and unidentified.
- On a solid-state coil, check that the banded end of the diode faces the same way as on the old coil.
- Fit a new coil sleeve at the same time.
- Tighten the mounting brackets fully.
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
- Use the solenoid test to find a coil that does not fire
- How the solenoid expander board doubles up coils
- Test the coils behind the solenoid expander
- Testing the diode on a coil
- Relay or solenoid?
- No solenoid voltage
- Firing each coil from the WPC solenoid test
- A coil hums continuously
Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)