Flippers work only sometimes, feel weak, or do nothing.

Solid state flippers dead, weak or intermittent: clean the switches

Cause: Dirty cabinet flipper switches or EOS switches.

Checks

• Watch the flipper board LED while pressing the button.

Fix

• Clean the cabinet switches and any EOS switches with a cotton swab and alcohol.

Systems

• Data East CPU Version 1/2
• Data East CPU Version 3
• Data East/Sega CPU Version 3b

Games

• Adventures of Rocky and Bullwinkle and Friends
• Back to the Future
• Batman
• Batman Forever
• Baywatch
• Checkpoint
• Guns N' Roses
• Hook
• Jurassic Park
• Last Action Hero
• Lethal Weapon 3
• Mary Shelley's Frankenstein
• Maverick
• Phantom of the Opera
• Robocop
• Star Trek
• Star Wars
• Tales from the Crypt
• Teenage Mutant Ninja Turtles
• The Simpsons
• The Who's Tommy Pinball Wizard
• WWF Royal Rumble

Related tips

• Solid state flippers, Robocop and later
• Solid state flipper very weak: power side has failed
• Measuring voltage at a solid state flipper coil
• Solid state flipper flutters when held
• Jurassic Park and later: the solid state EOS switch
• Solid state flipper goes up but will not stay up
• Solid state flipper has no power though fuses are good
• Solid state flipper stays up only after the button is first pressed

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