Jurassic Park and later: the solid state EOS switch

From Jurassic Park on, each solid state flipper has a normally closed EOS switch wired in series with its cabinet button. Power pulse length is still fixed; if a ball knocks a raised flipper back and the EOS closes, the board gives another full-power pulse so the flipper stays up.

Systems

• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Games

• Batman Forever
• Baywatch
• Guns N' Roses
• Jurassic Park
• Last Action Hero
• Mary Shelley's Frankenstein
• Maverick
• Tales from the Crypt
• The Who's Tommy Pinball Wizard
• WWF Royal Rumble

Related tips

• Flipper EOS switch role from Jurassic Park on
• Solid state flippers dead, weak or intermittent: clean the switches
• Measuring voltage at a solid state flipper coil
• Solid state flipper flutters when held
• Solid state flipper does not work: fuses and fuse clips
• Solid state flipper goes up but will not stay up
• Solid state flipper has no power though fuses are good
• Solid state flipper very weak: power side has failed

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