After fitting a new solenoid driver board and rebuilding its J3 connector, the game played for a few minutes, then all pop bumpers and slingshots stopped; the flippers still worked.
Pop bumpers and slings die minutes after a driver board swap: playfield fuse
Cause: The old solenoid fuse under the playfield had blown.
Checks
- Check the under-playfield solenoid fuse out of its holder.
- Double-check every wire position in a rebuilt connector against the board's colour chart.
- Look for a coil with a scorched wrapper if the fuse blows again.
Fix
- Replace the under-playfield fuse with the correct rating.
Systems
Games
Related tips
- No coils work at all though fuses are good and game starts: 43 V not reaching playfield
- Pop bumpers, slings and post weak, flippers fine: bad coil ground return plug
- Arcing between J3 pins on the solenoid driver board and displays out
- Bally -35: momentary solenoids all dead but fire when grounded: solenoid driver U3
- Pop bumpers fire nonstop after a solenoid expander swap: board jumper set wrong
- Saucer fires at power-on and blows the playfield fuse: wrong coil killed its transistor
- Knocker fires instead of the outhole kicker: bad solenoid driver J4 connector
- No +5V on any board and no MPU LED: bad return pin in the solenoid driver board J3 plug
Source: Pinball Repair help group!! (Facebook group)