Weak pops or slings: check the trigger switch RC parts
If a pop bumper or slingshot is sluggish, its trigger switch resistor or capacitor may have gone open, so the pulse is no longer stretched. Replace them.
Systems
Related tips
- Parts on a special solenoid trigger switch
- Pop or sling works in the game but not in test, or the reverse
- Coil sleeve part numbers for System 3-7
- Weak coils from a browned 3J3 connector
- Special solenoid trigger test at 2J12/2J13
- Testing a coil, switch or flipper diode with a meter
- Test a 1N400x diode on a coil, lamp socket or switch
- Slingshot barely kicks unless both contacts are pressed together
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Three, Clay Harrell (pinrepair.com)