What the Gottlieb reset bank does and which relays to clean

The reset bank is a rack of relays sharing a master reset bar. A large solenoid pulls the bar at the start of each game, returning every relay in the rack to a known state. It holds the relays that matter most for starting: game over, reset, tilt and the start (S) relay, so clean and gap all of their contacts.

Systems

• Electro-mechanical

Related tips

• Relay banks and their reset coil
• Which Gottlieb EMs have a reset bank
• Gottlieb reset bank solenoid and S start relay run on 120 V
• Gottlieb reset bank binding: check its alignment with the locking plate
• Gottlieb relay return springs
• Gottlieb AS relay (miniature match stepper)
• Gottlieb relay coil equivalents and resistance
• Gottlieb hold relay runs the whole time the game is on

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