(Topic ID: 218126)

Capcom Pinball Magic blowing fuse F9

By JReedie

5 years ago



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#1 5 years ago

My PM has started blowing the fuse at F9 on the power board. This fuse powers the magic wand magnets. Currently the wand coils will magnetise and levitate 2 or 3 balls and then the fuse pops. If anyone has any ideas what could be the issue i would really appreciate it. Ive checked the coils and they seem fine and from what i can tell the transistor driving the coils is fine as well.

Thanks,
James

#2 5 years ago

Have to ask, slo-blo fuses?

#3 5 years ago
Quoted from cody_chunn:

Have to ask, slo-blo fuses?

And correct amperage ?

LTG : )

#4 5 years ago

Yes, slow-blow 4A fuses

#5 5 years ago

Replced the transistor and the fuse still blows while carrying the ball down the wand. Retested the coils and theyre both coming out at 12ohms. Then i tested each diode across both of the coils with one leg out of circuit and one is testing at 690 and the other at 710. I reverse the DMM leads and both diodes read 1. Im using a super cheap backup multimeter at the moment so im unsure about the readings.

Whats your thoughts?

#6 5 years ago

What voltage do you have going to the coils? Any chance there is a short in the wiring going to the coils, perhaps from the motion of the wand (I've never really dug into that wiring part of the game, it's just a thought)?

1 week later
#7 5 years ago

Took the wand assembly out of the game and gave it a good clean and look over, replaced both coil diodes and shes now working perfectly again!

#8 5 years ago
Quoted from JReedie:

Took the wand assembly out of the game and gave it a good clean and look over, replaced both coil diodes and shes now working perfectly again!

Thanks for following up.

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