(Topic ID: 241617)

Stern Magic: No solenoids

By jdoz2

4 years ago



Topic Stats

  • 8 posts
  • 4 Pinsiders participating
  • Latest reply 4 years ago by Quench
  • No one calls this topic a favorite

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  • Magic Stern Electronics, 1979

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#1 4 years ago

So I’m working on someone’s magic and it starts a game but no solenoids are working. Checked all fuses and checked the voltage st the coils and the fuse between the flippers and I’m getting 5.6v

The J1 connector on the bridge rectifier was cut short and didn’t have a key so I’m wondering if that’s incorrect.

Any help would be greatly appreciated!

#2 4 years ago

Edit. U saw the under pf fuse

#3 4 years ago
Quoted from jdoz2:

So I’m working on someone’s magic and it starts a game but no solenoids are working. Checked all fuses and checked the voltage st the coils and the fuse between the flippers and I’m getting 5.6v

The J1 connector on the bridge rectifier was cut short and didn’t have a key so I’m wondering if that’s incorrect.

Sounds like you're getting feature lamp voltage on the solenoid rail instead of solenoid voltage so maybe the J1 connector is wired wrong.
Post some clear pictures of the J1 connector at the rectifier board showing the wire colors and positions they're at.

#4 4 years ago
Quoted from Quench:

Sounds like you're getting feature lamp voltage on the solenoid rail instead of solenoid voltage so maybe the J1 connector is wired wrong.
Post some clear pictures of the J1 connector at the rectifier board showing the wire colors and positions they're at.

Ya that’s what it seems like but I didn’t find the info for the J1 connector in the manual to double check. Might have been an incomplete copy of it I’m not sure.

I won’t be back to take a photo until probably Wednesday but I’ll post one when I do.

#5 4 years ago
Quoted from jdoz2:

Ya that’s what it seems like but I didn’t find the info for the J1 connector in the manual to double check. Might have been an incomplete copy of it I’m not sure.
I won’t be back to take a photo until probably Wednesday but I’ll post one when I do.

I'm at work, but I can take a picture of mine when I get home.

According to some internet searches I found J1-6 should be the +43 Volt Solenoid power.

#6 4 years ago
Quoted from thirdedition:

I'm at work, but I can take a picture of mine when I get home.
According to some internet searches I found J1-6 should be the +43 Volt Solenoid power.

That would be great thank you!

#7 4 years ago

My connector apparently needs work too. My molex only has 8 slots not 9. I hope this helps.

IMG_20190428_092414 (resized).jpgIMG_20190428_092414 (resized).jpg
#8 4 years ago

Note on the above picture:
Pin 1 is the red wire (general illumination ground)
Pin 4 is the key
Pin 6 is the blue-white wire (solenoid power 43 volts DC)
Pin 7 is the blue wire (feature lamp power 5.4 volts DC)
Pin 8 is the white wire (general illumination power 6 volts AC)

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