The flipper coil gets very hot in play.

Flipper coil runs very hot (Time Machine and earlier)

Cause: The EOS switch is not opening at full stroke, or the capacitor across it has shorted.

Checks

• Check the EOS opens with about a 1/8" gap at full stroke and its contacts are clean.
• Check the EOS capacitor for a short.

Fix

• Adjust and file the EOS, or replace the capacitor.

Systems

• Data East CPU Version 1/2

Games

• Laser War
• Secret Service
• Time Machine
• Torpedo Alley

Related tips

• Flipper circuit on Laser War to Time Machine
• Weak flipper on Time Machine and earlier: pitted switch contacts
• Flipper flutters when held (Time Machine and earlier)
• Checking a pre-solid-state flipper coil
• Flipper sometimes sticks up, even with power off: replace the coil sleeve
• Flipper only has hold strength after a rebuild: EOS wire on the wrong coil lug
• Pre-solid-state flipper keeps blowing its fuse
• Flipper coil resistance readings

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