Spare diodes for coils and switches
Keep a few 1N4004 (coil and lamp diodes) and 1N4148 (switch diodes; 1N914 or NTE519 also work).
Systems
Related tips
- Electronic spares worth keeping for System 11 boards
- Testing a coil diode
- Testing the diode on a coil
- Which way a coil diode goes
- Testing a coil, switch or flipper diode with a meter
- Which way a coil diode goes
- Test a 1N400x diode on a coil, lamp socket or switch
- Test a playfield switch diode
Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)