Hi guys,
I just finished re-working a Williams Super Star machine, and have it working 99.9%. The one remaining glitch is that every once in a while, when the ball goes into the center saucer hole and scores the bonus, it doesn't kick out quite fast enough and the drop target in front of the saucer pops up and blocks the ball behind it. When this happens, the only way to clear the problem is to take off the glass and bump the drop target manually.
To address the problem, I made sure everything in the electronic circuit is adjusted correctly--the switches on the long-dwell cam of the score motor were questionable, but I think I now have them correct. I replaced the coil sleeve and made sure everything is clean and smooth. With the power off, everything seems to be moving free and easy like it should. I also gently squeezed the two metal guides in the saucer to make sure the ball is positioned toward the back, to give it maximum impact from the metal kicker.
I MIGHT have the problem fixed. When I tested it today, I could not replicate the stuck ball problem. It's popping out nicely and doesn't just dribble out.
However, I am planning to place the machine in a new home soon and I don't want a leave a problem for the new owner--even if it's only a 1/1000 occurrence.
So I am wondering if giving the kicker coil a little more power would make it work 100%. The existing coil is marked A-22 550 and appears to be original. I am wondering if there is a replacement coil that has a bit more oomph. Or maybe I should unwind a couple turns off the stock coil to lower its resistance.
Or perhaps this is just the nature of this particular mechanism, and it's something that just has to be lived with? ("The ball is wild." --Harry Williams)
I would appreciate any thoughts from those who may have experienced a similar issue.
Thanks,
Mike