(Topic ID: 250821)

stepper unit in back of Fun Land problems

By Drussksu

2 years ago


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  • 11 posts
  • 5 Pinsiders participating
  • Latest reply 2 years ago by Drussksu
  • Topic is favorited by 2 Pinsiders

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0Fun-Land-Work-02 (resized).jpg
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#1 2 years ago

Hi, I am getting very close to getting this machine running. This stepper unit is buzzing and getting stuck on in certain positions. I noticed some suspect wiring in the back anyone have any thoughts. Those bottom two wires don't look to be totally attached and they both have been soddered together.

IMG_20190904_211600892.jpgIMG_20190904_211615006.jpg
#2 2 years ago
Quoted from Drussksu:

Those bottom two wires don't look to be totally attached and they both have been soddered together.

Which two are you talking about?

#3 2 years ago
Quoted from currieddog:

Which two are you talking about?

In the second picture the bottom two wires I think one is blue and the other is blue with black. You can't see it in the picture but someone has done a repair which cut those wires then soldered them back together. In those areas bare wire is showing. I want to make sure those wires are not an issue. Otherwise I think I just need to replace the coil on that stepper unit. It seems to work fine when I have the glass off and I am testing playfield features I cannot get the coil to jam. When I play the machine it will jam every other game. I am also thinking I need to replace the coil for the 10 point bell. Do you have the schematics? I ordered them, they have not come in yet. Im wondering what coils I should order from Marcos as the replacements.

#4 2 years ago
Quoted from Drussksu:

In the second picture the bottom two wires I think one is blue and the other is blue with black. You can't see it in the picture but someone has done a repair which cut those wires then soldered them back together.

Is that second pic a shot from IPDB or somewhere? If so, yours should be like that.

#5 2 years ago
Quoted from Drussksu:

Do you have the schematics? I ordered them, they have not come in yet. Im wondering what coils I should order from Marcos as the replacements.

I have a really crappy JPEG series for that. I would hold off on coils til you get everything straight with the wires. My experience has been that stepper coils don't fail very often.

#6 2 years ago

From the Peanut Gallery.

Your first photo, is too dark. Are the little shoes on the stepper soldered together, at the top like the visible ones on the left, no missing connections?

When you get the schematic, on it will be the coil info for the stepper unit. Is it possible that the stepper unit is gunked up with old lubricant? If you activate the coil with your finger will it click through its cycle easily?

#7 2 years ago
Quoted from Darcy:

Your first photo, is too dark. Are the little shoes on the stepper soldered together, at the top like the visible ones on the left, no missing connections?

When you get the schematic, on it will be the coil info for the stepper unit. Is it possible that the stepper unit is gunked up with old lubricant? If you activate the coil with your finger will it click through its cycle easily?

I took the top off cleaned with 600 grit sandpaper then wiped with alcohol. Problem is still occuring. There are no missing connections. The bottom two wires are connected though they have had some type of repair in the past. There is about three inches of wire then they have been soldered together with bare wire showing. If I activate the coil with my finger it clicks through smoothly. Ill try and take another picture. I didn't notice the repair until I unclipped the unit from the back of the machine.

#8 2 years ago
Quoted from currieddog:

Is that second pic a shot from IPDB or somewhere? If so, yours should be like that

The second picture is from my machine. The more I think about it the more I think it is a bad coil. I can't find anything else unless there is some type of switch that needs adjusting. I have gone through all the score reels and the m-n-l unit. All of those switches are cleaned and adjusted.

#9 2 years ago
Quoted from Drussksu:

I think it is a bad coil

The schematic will show if your machine has the same part number coil elsewhere to test by swapping.

#10 2 years ago

Hi
here a JPG - part of a partial schematics. Greetings Rolf

0Fun-Land-Work-02 (resized).jpg
#11 2 years ago

Thanks I think I'll try switching with the add ball coil. One more thing I noticed. When the add 0-9 unit coil gets jammed. The yellow pop bumpers get stuck down.

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