Coils fire at random, fuses blow and the switch matrix shows shorts.
Jurassic Park: random coils, blown fuses and switch shorts
Cause: A main playfield wiring trunk rubs on the upper right flipper coil stop; flipper vibration saws through the insulation.
Checks
- Inspect the harness near the upper right flipper coil stop for cut or bared wires.
Fix
- Repair any damaged wires.
- Tie the harness back with nylon cable ties so it is held clear of the coil stop.
Systems
Games
Related tips
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Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Three, Clay Harrell (pinrepair.com)