Carneys Point Township, NJ
Quoted from jibmums:My Xenon is blowing the 1A/SB playfield fuse right at startup. Heard one of the solenoids fire but didn't see which one it was, I did see the fuse blow (playfield was up) right as I turned the machine on. I did a visual inspection under the playfield and didn't see anything touching anything else it shouldn't, but that doesn't mean I didn't miss something. Measured all the coils with an MM and results are all close to spec, the furthest ones off are the ball trough at 14.0 Ω (should be 14.5 Ω) and the big drop bank reset coil at 21.1 Ω (should be 22.0). Everything else is only off by 0.1 - 0.3 Ω so I think they're fine, or not shorted at least.
Not sure what my next step is. Do I pull the solenoid board and check for a shorted transistor? Would that blow the fuse at startup? Could the board be at fault at all?
Do I desolder one lug from each coil, then resolder one at a time until I find the culprit?
Something else I'm not thinking of?
My Xenon blew the PF fuse before and it was a shorted diode on the drop target reset coil. Sometimes these just blow from excessive playing. Also I have noticed the fuse clips on these become weak. Loose connection equals extra heat. I always replace them when doing a swap. If you're not getting 0 ohms on any coils the problem is probably something else. You should try to figure out which coil you heard kick on.
