(Topic ID: 223557)

Williams Skylab outhole issues.....

By 82Trooper

10 months ago

Topic Stats

  • 9 posts
  • 5 Pinsiders participating
  • Latest reply 9 months ago by pinballdaveh
  • No one calls this topic a favorite


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#1 10 months ago

Looking for some advice on a diagnosis for this this game. We have owned this for several years, and it did this intermittently, but now it happens more frequently.
What happens is when you push "start" to begin a game, everythin g seems to cycle properly, resets the score reels, and the out hole coil pulses weakly, not hard enough to send to ball to the shooter gate. As a result, the ball rolls back, the machine thinks it is ball over, pulses again, decrements a ball count, then the ball rolls back....until all 5 balls are "used" and the machine thinks it is game over.
Attached are 2 short Youtube videos to illustrate the issue.
Trouble shooting suggestions?


#2 10 months ago

I would try and clean the score motor switch 4A which is the bottom switch on the score motor on the 5th cam starting from the actual motor.


#3 10 months ago

Is this the correct switch you are referencing?

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#4 10 months ago
Quoted from 82Trooper:

Is this the correct switch you are referencing?[quoted image]

Wrong switch...you’re referencing 5E... you should be looking at switch 4A, which is a part of the ball release coil trip circuit.. I just fixed this same issue on my Williams Gulfstream that shares the same circuit as your game... the switch gap was too far apart... could also be dirt on the switch contact(s).

#5 10 months ago

Got it...this one....

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2 weeks later
#6 9 months ago

Ok, so I got to my dad's place for the holiday weekend (that is where this game us set up). I cleaned the switch as above, and it appears I fixed the initial issue. However, a secondary issue developed right away. Hit the start button, game cycles, kicks the ball out the outhole into the shooter lane (that was problem #1, now working). But then the game immediately cycles thru all 4 remaining balls, as if it thinks the game is over.

I was very cautious in cleaning the switch on the score motor cam, as there are so any things to "bump' there, to not touch or disturb any other switch than what I was cleaning. But I guess it is possible. I am a big subscriber to the theory that the next thing that goes wrong is usually related to the last thing you messed with...

Here is a video....any thoughts?


#7 9 months ago

Thursday Bump (my cry for help....)

#8 9 months ago

Check to see if the outhole switch is closed. It look like the machine thinks you are at end of ball.

I would double check the switch in post #5.

#9 9 months ago

Check the ball index relay for sticking or staying energized. The relay should release after each ball.

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