After first use the flipper stays energized in the up position.

Flipper stuck up with power on (Playboy and later)

Cause: A broken or shorted coil diode (its reverse spike can also damage the flipper board), then a failed TIP36 (power) or TIP32 (hold) on the flipper board. A shorted TIP36 usually raises the flipper the moment a game begins.

Checks

• Replace the coil diode first.
• Diode-test the TIP36 and TIP32 transistors.

Fix

• Fit a new 1N4004 or 1N4007 on the coil.
• Replace a failed transistor.

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
• Monday Night Football
• Phantom of the Opera
• Playboy 35th Anniversary
• 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 flipper has no power though fuses are good
• Solid state flipper very weak: power side has failed
• Solid state flipper flutters when held
• Fliptronics flipper coil wired wrongly
• Electronic spares worth keeping for System 11 boards
• Fliptronics II board components
• How Data East solid state flippers work (Robocop on)
• Solid state flippers, Robocop and later

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