After plugging a vacuum into the cabinet's service outlet, the game has no power at all and the service outlet is dead too. All the fuses test good and the wall outlet works.

Game totally dead after running a vacuum from the service outlet: power cord

Cause: The game's power cord had failed (often at the plug end), most likely under the extra load.

Checks

• Confirm the wall outlet and breaker are good.
• With the game unplugged, check continuity through each conductor of the power cord from plug to cabinet, flexing the cord near the plug.
• Check any inline fuse and the line filter box where the cord enters the cabinet.

Fix

• Replace the power cord (a heavy-gauge three-prong cord) or its plug.

This is line-voltage wiring. Unplug the game before testing or replacing the cord.

Systems

• Bally MPU AS-2518-35

Games

• Space Invaders

Related tips

• The three Bally rectifier boards
• Replacing the -49 VARO pair with one bridge
• Line filter, power switch and service outlet
• Make sure the power cord has its ground prong
• Touching the tilt or cabinet metal fires a kicker: broken earth wire in the power cord
• Blown line varistor VR1

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