(Topic ID: 324325)

What would sporadically cause the solenoid fuse to blow?

By topkat

1 year ago


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  • 15 posts
  • 6 Pinsiders participating
  • Latest reply 1 year ago by PinRetail
  • Topic is favorited by 1 Pinsider

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#1 1 year ago

What would cause the solenoid fuse to blow every few games on a sorcerer . It will boot and work for sometimes a bunch of games and sometimes only a few, and then the solenoid fuse blows. Does that sound like a pf issue ? My plan is to get a breaker and see if I can activate a coil that causes it to blow.

#3 1 year ago

Would a bad diode sometime function properly and then other times blow the fuse ?

It’s the correct fuse rating

I don’t believe a terminaL is shorter

#6 1 year ago

So it quickly changed that as soon as a game is started the fuse blows. I unplugged the two connectors for solenoids and it still blew on game startup. Then I unplugged special solenoid connector and it didn’t blow. I ran test mode and all the non special solenoids fire with no issue.
It seems then as mentioned by pin retail it has to be the special solenoids. I will go there next
Thanks

#9 1 year ago
Quoted from DumbAss:

Differentiate "power on" from "game start". Entering diagnostics is equivalent to game start.

If a solenoid locks (or a fuse blows) on power on then you most likely have a shorted drive transistor.
If a solenoid locks (or a fuse blows) on game start then you most likely have a stuck special solenoid trigger (playfield switch) or a fault in the special solenoid logic level circuitry.

It is never happens with just power on.
It happens at the start of a game, or in test mode. But with the special sol connector off it does not. It seems to have gotten progressively worse. Meaning I could play 20 games before it would happen.
Now it’s every game. I will check all
The special sol switches next

Thanks to all
I

#11 1 year ago

I assumed it to be the pops. But after checking switches the rt sling has a broken cap.
Will start with this

image (resized).jpgimage (resized).jpg
#13 1 year ago
Quoted from slochar:

While the broken cap doesn't help the sling's performance it being disconnected would not cause the lockon. The cap is there to impart a minimum pulse to the circuit so that even a short hit can fire the sling. With it missing, a longer pulse from the switch will be needed. (The circuit only fires as long as it gets a signal).
Now a defective cap that's shorted might fire once and lockout but since 1/2 of your cap isn't connected....

Shoot wishful thinking ..Thanks then I will need to keep looking….

#14 1 year ago

Found it. Somehow one of the pop trigger switches had bent into closed position.
Easy fix once I was able to locate it.
Thank you all for the help

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