Pressing start begins a game but no ball is ejected to the shooter lane.

Game starts but never serves a ball: balls jammed under the apron

Cause: The balls had jammed together under the apron, so the outhole and trough could not feed one to the ball release.

Checks

• Before chasing fuses or boards, lift the apron (or look under it) and count the balls; make sure none are wedged between the outhole and the trough.
• Then check the trough switches in switch test and fire the ball release coil in solenoid test.

Fix

• Free the jammed balls and check what let them stack up (a bent wireform, debris, or a weak outhole kicker).

Systems

• Gottlieb System 80B

Games

• Hollywood Heat

Related tips

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

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