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(Topic ID: 286901)

Trouble shooting stuck one-point relay on Gottlieb EM

By beatclub

3 years ago


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#10 3 years ago
 
???

currieddog

Pinside member

US Springfield, MA

7y 63,550 3,312 6

OP
Quoted from beatclub:

Also, when this relay is stuck, the solenoid on the 0-9 unit (continuous rotation unit?) also energizes and will not release until machine is powered down. (Not sure if this is normal with a stuck point relay)

Did you check the coils on the 0-9 and the 1 pt. relay with a multimeter?

Quoted from DCRand:

If the pop bumper scores 1 point. Sounds like that is your issue.

I was thinking so too, except the OP says that the 1 pt. doesn't stick til activated and also that unplugging the PF doesn't make it stop.

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#15 3 years ago
 
???

currieddog

Pinside member

US Springfield, MA

7y 63,550 3,312 6

OP
Quoted from beatclub:

Also, when this relay is stuck, the solenoid on the 0-9 unit (continuous rotation unit?) also energizes and will not release until machine is powered down.

See what happens with the 1 pt relay if you remove one lead from the 0-9 coil.

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#18 3 years ago
 
???

currieddog

Pinside member

US Springfield, MA

7y 63,550 3,312 6

OP
Quoted from beatclub:

FYI
Pop bumper coil - 7.0 Ohm
One point coil - 3.3 Ohm
0-9 unit coil - 3.5 Ohm

What are the coil numbers? I just had a coil on an 0-9 unit (Williams) check out ok, but it was shot.

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#20 3 years ago
 
???

currieddog

Pinside member

US Springfield, MA

7y 63,550 3,312 6

OP
Quoted from beatclub:

Which numbers on the coils do you mean?

The # on the paper that covers each.

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#21 3 years ago
 
???

currieddog

Pinside member

US Springfield, MA

7y 63,550 3,312 6

I just noticed this. You might want to try a new resistor, which you can find on eBay.

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