Make a plug-in circuit breaker for chasing blown fuses

Steps

• Get a small PC-mount 5 A breaker such as the Tyco W57-XB7A4A10-5 (a 10 A W57-XB7A4A10-10 also exists).
• Solder a blown glass fuse across the breaker's two terminals and dab silicone on to hold the glass.
• Fit the fuse body into the game's fuse holder in place of the fuse being chased; when the short trips it, reset the breaker instead of buying another fuse.
• Use the 5 A size for both the solenoid and lamp circuits of a typical EM; below 3 A it trips within seconds from normal score motor current.
• Do not use a 10 A breaker for fault finding: breakers trip slower than fuses, so choose one rated below the fuse it replaces.

Systems

• Electro-mechanical

Related tips

• Fuses to keep for EM games
• Finding why a fuse blows: start with which circuit
• Where EM fuses are
• Test a fuse properly with a meter
• Check fuse ratings before the first power-up
• Gottlieb reset bank fuses
• Solenoid fuse blows
• A fuse blows as soon as a game is started

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