The special solenoid fuse (F4) blows straight after power-up, and the slingshots, pop bumpers and some flashers don't work, even in test.
Special solenoid fuse blows at power-up: a pop bumper switch held closed
Cause: A pop bumper had been reassembled so that its skirt switch was held closed all the time.
Checks
- Unplug the pop and sling connector (J19 here) and power up; if the fuse now holds, the fault is in those coils or switches.
- Check each pop bumper and sling switch is open at rest.
Fix
- Reassemble the pop bumper correctly and re-gap its switch.
Systems
Games
Related tips
- Half the backbox lamps and the lower displays dead: check the backbox fuses
- All controlled lamps out, 18 V collapses under load: bad lamp fuse on replacement supply
- Pops and slings fire in coil test but not from their switches: ground wire pulled out
- Right sling locks on at power-up and a pop is dead: bad 7402 at U45
- Pops and slings dead after fitting a replacement power supply: check its fuse map
- Power supply board fuses (typical game)
- Interconnect board and flipper power board fuses
- Check every fuse for the right rating and type before power-on
Source: Pinball Repair help group!! (Facebook group)