After fitting a new upper flipper coil and wiring it the same way as the old one, the game's main fuse blows.
Lights Camera Action: new upper flipper coil blows the main fuse: lugs wired wrong
Cause: The wires had been moved to the wrong coil lugs.
Checks
- Compare the lug wiring with a known-good game or the manual's flipper drawing before powering up.
- Look for frayed strands touching the coil frame.
Fix
- Rewire the coil: the power wire, one end-of-stroke switch wire and the diode's banded end share one outer lug; the other end-of-stroke switch wire goes to the middle lug; the drive wire goes to the other outer lug at the diode's unbanded end.
- Replace frayed wire ends so no bare copper is exposed.
Unplug the game before working on coil wiring.
Systems
Games
Related tips
- Flippers hold up but will not flip: corroded EOS switches
- Gottlieb large flipper coils by wrapper colour
Source: Pinball Repair help group!! (Facebook group)