A shock when touching the coin door or inserting coins.

Shock from Gottlieb coin door coin switches

Cause: At least one coin switch feeds the 115 V start relay. Its fish paper insulator is worn, torn, shifted, or fitted above the trip lever instead of sitting between the contact blade and the metal trip wire.

Checks

• Check the fish paper position on each coin switch.

Fix

• Fit new fish paper so it separates the contact blade from the trip lever.

115 V on the coin switches: unplug the game first.

Systems

• Electro-mechanical

Related tips

• Shock from the start button or coin door
• Pre-1968 Gottlieb games have 120 V at the coin door
• Add a power switch to an EM that has none
• Shock or voltage between cabinets: check line cord polarity to the fuse

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)