Coils fire on their own, fuses blow, and the switch matrix shows shorts.
Jurassic Park: coils fire at random, fuses blow, switch matrix shorts
Cause: A main playfield harness bundle rubs on the upper right flipper coil stop and is worn through by flipper vibration.
Checks
- Inspect the harness near the upper right flipper for cut insulation.
Fix
- Repair any damaged wires.
- Pull the harness away from the coil stop and secure it with nylon cable ties.
Systems
Games
Related tips
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Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Two, Clay Harrell (pinrepair.com)