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A flipper does not work at all.

Jurassic Park, Last Action Hero, Tales from the Crypt: flipper dead from its EOS switch

Cause: On these games the normally closed EOS switch must be closed at rest. If it is dirty, misadjusted, or has a broken blade or wire, the flipper is dead. Only the 520-5033-03 and the 520-5070-00 flipper boards behave this way.

Checks

  • Bridge the EOS switch with a clip lead; if the flipper then works, the switch is at fault.

Fix

  • Clean, adjust or repair the EOS switch.
  • Or fit the updated boards (520-5076-00 for 520-5033-03, 520-5080-00 for 520-5070-00), or modify the old boards per service bulletin 54.

Systems

Games

Related tips

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Two, Clay Harrell (pinrepair.com)