Line fuse that blows only with the coin door closed
The flasher and coil supplies drop out while the coin door is open, so some shorts only show once it is closed. A line fuse that blows only with the door closed points to a shorted bridge on the Fliptronics board (WPC-89/WPC-S) or the A/V board (WPC-95), or the coil supply bridge or diodes. On WPC-S and earlier the domestic line fuse is usually an 8 A fast-blow 1.25 inch fuse; check the manual.
Line voltage is present in the power box and at the transformer whenever the game is plugged in; unplug it before working there.
Systems
Related tips
- Find what is blowing a fuse
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- Fuse F116 keeps blowing
- WPC-95 changed to small slow-blow fuses
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- F104 and F112 blow at start-up: auto-plunger coil wire touching its bracket
Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part One, Clay Harrell (pinrepair.com)