After a burning smell, the flippers, pop bumpers and centre eject (everything powered from the flipper supply board) stop working, with 0 V on both sides of that board's fuse.
Burning smell, then flippers, pops and eject all dead: broken flipper EOS switch
Cause: A broken leaf switch on the right flipper (the end-of-stroke switch) was shorting and blowing the supply fuse.
Checks
- Take the fuse out and test it with a meter; a fuse can look fine.
- Disconnect the coils on that supply (unplug their connectors or a coil lead) and add them back one at a time to see which one blows the fuse.
- Test each suspect coil's resistance, diode and drive transistor before powering up again.
Fix
- Rebuild the right flipper, replacing the broken EOS switch, then fit a new fuse.
Systems
Games
Related tips
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Source: Pinball Repair help group!! (Facebook group)