Question I've never seen answered...maybe never even asked!

kencinder

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Question I've never seen answered...maybe never even asked!

Will an outright MISSING coil, cause a fuse to blow?

I'd imagine you'd ask "Well, what coil?". Ball counter coil on an EM in this case...but I'll take a broad based answer, or enlightenment in a case of a missing coil in any other spot, on any other type of pin for further knowledge. ;)
 
I cant really see how unless you have the disconnected wires shorting against something. Maybe you have contacts touching that wouldent normally do so with the coil in place?
 
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I would really like to know the answer to this as well. My System 6 Blackout that randomly blows the solenoid fuse is missing the coin knocker solenoid and the coin lockout solenoid isn't wireed up (since it was tied in after the coin knocker). Could this cause the fuse to blow?
 

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think of the wiring just like a car -
removing the horn and leaving the wires hanging - would this cause the horn or any other fuse to blow? no
same as a coil or light or led or flipper leaving the wired hang without touching will only cause the device removed to not function.
make ssnse?
 
I cant really see how unless you have the disconnected wires shorting against something. Maybe you have contacts touching that wouldent normally do so with the coil in place?

No they're not, the coil fried most likely because it's shaft was absolutely filthy and likely sticking. I haven't had the pin long, was working...

I just know coils are wired HOT and grounded active, and these things can be odd sometimes...especially SS and DMD with the electronics misbehaving in all sorts of ways.

General electrical sense told me "No" already, but I had to ask from a user standpoint, for something I'm still not more than a novice working on.
 
but if it were me I would hook a dvm to the fuse, set it for dc volts - power it on (the pinball) and off by the bottom switch, watching the meter for over voltage. if that looked good put it on ohms and repeat and see if the ohms zero out and a short is seen when the fuse blows.
then start removing wires of devices in the path and repeat untill it stays good.
that would be my starting point.
 
I would really like to know the answer to this as well. My System 6 Blackout that randomly blows the solenoid fuse is missing the coin knocker solenoid and the coin lockout solenoid isn't wireed up (since it was tied in after the coin knocker). Could this cause the fuse to blow?

No, at least not in the case of the coin lockout solenoid. I've removed mine also and I've no issues with blowing fuses, you just have to be careful about insulating up the connections to prevent shorts.
 
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I would really like to know the answer to this as well. My System 6 Blackout that randomly blows the solenoid fuse is missing the coin knocker solenoid and the coin lockout solenoid isn't wireed up (since it was tied in after the coin knocker). Could this cause the fuse to blow?

You most likely have a solenoid that is at the end of its service. Use a meter and check the resistance of all your solenoids. Most likely you will have a coil that is reading lower then the others.

The lower the resistance of the solenoid, the more current that it will draw (Basic electronics, ohms law, voltage=current X resistance). This being said if you have a solenoid that is drawing excess current you could "blow" the solenoid fuse with the right combination of solenoids firing at the same time.

Make sense?
 
You most likely have a solenoid that is at the end of its service. Use a meter and check the resistance of all your solenoids. Most likely you will have a coil that is reading lower then the others.

The lower the resistance of the solenoid, the more current that it will draw (Basic electronics, ohms law, voltage=current X resistance). This being said if you have a solenoid that is drawing excess current you could "blow" the solenoid fuse with the right combination of solenoids firing at the same time.

Make sense?

Unfortunatly all coils ohm right at 4.0-4.2. But on a good note, it hasn't blow a 2amp thermal breaker (used for monitor chassis work) in two days, with ALOT of on/off switching and play time. I figure when I reseated the 40 pin connector the other day, that it temp. fixed the cause of the fuse blowing. Which to me just means it needs to be fixed right.
 
Blown fuse = over load
Disconnected wires = no load


Unless its a load through application / application or to ground I doubt its possible.
 
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