Displays come up 000000 without flicker and the start button does nothing, or the displays blank when start is pressed.

Game locked at 000000 with no flicker: coin lockout wire

Cause: A coin lockout wire has jammed into a coin switch and is holding it closed.

Checks

• Look at the coin switches behind the coin mechs for a lockout wire touching the blades.

Fix

• Free the wire and adjust it clear of the switch.

Systems

• Gottlieb System 80
• Gottlieb System 80A
• Gottlieb System 80B

Related tips

• Displays show 000000 at once and scroll; start does nothing
• Scores light at once and the status display stays dark

Source: Repairing & Upgrading Gottlieb System 80 Pinballs from 1980 to 1989, Part Two, Clay Harrell (pinrepair.com)