Attract mode and credits work, but after pressing start no ball goes to the shooter lane, the flippers stay dead and no second player can be added. The outhole kicker keeps trying to push a ball up and it falls back.

Game starts but no ball is served: needs four balls and working trough switches

Cause: Spring Break needs four balls and will not serve one until it sees them all. Here both trough switches were not registering because their 1N270 diodes on the diode board had failed.

Checks

• Make sure four balls are in the game, with one sitting in the outhole.
• In switch test, check that each trough switch registers as balls are added.
• Check the 1N270 diodes for the trough switches on the diode board.

Fix

• Replace the failed diodes on the diode board.

Systems

• Gottlieb System 80B

Games

• Spring Break

Related tips

• Game starts but never serves a ball: balls jammed under the apron
• Nothing scores or fires in a game though tests pass: ball never fed, outhole fuse blown

Source: Pinball Repair help group!! (Facebook group)