Checking for a short from the line cord to the cabinet
Steps
- Unplug the game from the wall.
- Clip one meter or test-light lead to one flat blade of the plug and touch the other lead to bare metal: the coin door, side rails and lockdown bar. There should be no continuity.
- Repeat with the other flat blade (not the round ground pin).
- If either blade shows continuity to metal, do not plug the game in until the short is found and fixed.
The power cord, main fuse, on-off switch, transformer primary and service outlet carry 110-120 V line voltage, which can kill. Unplug the game first.
Systems
- Williams System 3
- Williams System 4
- Williams System 6 / 6A
- Williams System 7
- Williams System 9
- Williams System 11
- Williams System 11A
- Williams System 11B
- Williams System 11C
- WPC Alpha-Numeric
- WPC Dot Matrix
- WPC Fliptronics
- WPC DCS
- WPC-Security (WPC-S)
- WPC-95
- Bally MPU AS-2518-17
- Bally MPU AS-2518-35
- Stern MPU-100
- Stern MPU-200
- Bally 6803
- Gottlieb System 1
- Gottlieb System 80
- Gottlieb System 80A
- Gottlieb System 80B
- Gottlieb System 3
- Data East CPU Version 1/2
- Data East CPU Version 3
- Data East/Sega CPU Version 3b
- Capcom
- Electro-mechanical
Related tips
Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)