A whole group of coils (outhole, shooter lane kicker, gate, head diverter and others) stops firing at the same time. All fuses are good and the driver board headers are sound.
Half the coils stop at once with good fuses: shared coil wire broken at one lug
Cause: The coils in that group share one wire that is daisy-chained from coil to coil. It had broken off the lug of one coil (the wheel shot coil), cutting off every coil after it in the chain.
Checks
- List the dead coils and find the wire colour they all share in the manual.
- Follow that wire from coil to coil under the playfield and in the head, looking for a broken or loose joint.
Fix
- Resolder the broken wire to the coil lug.
Systems
Games
Related tips
- Two or more coils fire together
- Ball keeps rolling back into the skill shot lane: missing one-way gate
Source: Pinball Repair help group!! (Facebook group)