The game will not power up or boot even though the fuses look fine.

Game won't boot: failed vertical fuse holder

Cause: The flat fuse holders are reliable, but the upright holders used for line power and the display high voltage (such as F3) often fail.

Checks

• Inspect and test the upright fuse holders first, checking for continuity through holder and fuse.

Fix

• Replace a bad upright holder with a flat style holder.

Line voltage is present in the power box and transformer panel; unplug the game first.

Systems

• Gottlieb System 3

Related tips

• Boots to game over, then lamps and switches are dead
• A12 transformer panel fuses F3 to F7
• Game won't turn on with the coin door open
• Power box fuses F1 and F2
• Bulbs burn out fast: 110 V jumper plug fitted
• DC supplies from the transformer panel
• AC windings from the transformer
• Erratic faults from a poor ground at the A18 board

Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)