A fuse on the power driver board blows, and when it is pulled the fuse holder breaks off the board; one of its clips had already been loose.
WPC: fuse holder snaps off the power driver board: replace the clips properly
Cause: A loose or cracked fuse clip makes a poor, heating connection, which can itself cause the fuse to blow and eventually breaks the holder away from the board.
Checks
- Inspect every fuse clip on the board for looseness, discoloured plastic or cracked solder.
- Check the fuse rating and type (slow-blow or fast) printed on the board or in the manual before fitting a new one.
Fix
- Remove the power driver board and solder in new fuse clips or a new holder, reflowing any cracked joints on the board while it is out.
- Fit a fuse of exactly the rating and type the board calls for. Members warned against high-current automotive blade fuses or oversized in-line holders as substitutes.
Switch the game off and unplug it before removing the board; the power driver board carries solenoid and lamp voltages, and the wrong fuse can let a fault overheat wiring.
Systems
Related tips
- WPC power driver board fuses and what they feed
- Which fault blows which driver board fuse (WPC-89/WPC-S)
- WPC-89/WPC-S driver board fuse ratings
- Switch matrix fuse F115 (F101 on WPC-95) blows as soon as it is replaced
- Typical causes of each blown fuse (WPC-89 and WPC-S)
- Fuse F116 keeps blowing
- Finding whether a blowing fuse is a board or wiring fault
- Cannons and a flipper lose power at once: a fuse that looked fine was blown
Source: Pinball Repair help group!! (Facebook group)