A 1975 or later Gottlieb multi-player game won't reset or start properly.

1975+ Gottlieb won't reset: Ax/Bx latch relay blades out of their slots

Cause: The reset bank was replaced by short-throw latching relays: Ax and Bx (plus Cx/Dx on some), or Ax alone on single players. Their switches have very little travel and need exact gaps. If the actuator plate is forced it can slip off its pivot and the switch blades drop out of their slots; blades put back in the wrong slots leave every gap wrong.

Checks

• Inspect the Ax/Bx actuator plate: it must sit on its pivot with each blade in its own slot.
• Check each make/break gap as the relay latches and unlatches.

Fix

• Re-seat each blade in its correct slot and set the gaps carefully; handle these relays gently.

Systems

• Electro-mechanical

Related tips

• Gottlieb 1970s Ax/Bx latch-trip relays misbehave
• Gottlieb multi-player: motor runs on at player 1 ball 1
• Gottlieb reset bank solenoid and S start relay run on 120 V
• Gottlieb 4-player shows players 1 and 4 lit at start
• Gottlieb Ax/Bx/Dx relays, coin unit and player unit: what each does
• What the Gottlieb reset bank does and which relays to clean
• Game resets but will not start: adjust hold relay and reset-completed relay latch
• Wrong player comes up on ball 2 and scores won't reset: stuck P relay switch

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)