Arcade Collecting > Pinball
Pinball mechanical problems
Chris:
--- Quote from: Kevin Mullins on October 07, 2007, 05:09:05 pm ---
--- Quote from: Chris on October 07, 2007, 03:58:01 pm ---
* One of the stand up switches doesn't work.
--- End quote ---
Not much to those. Maybe ohm the wiring and look for a bad connection or break.
--- End quote ---
It turned out to just need a much more agressive cleaning than I had been doing. The contacts were pretty black.
--- Quote ---P.S. I'm assuming you have both the manual and schematic from IPBD online right?
--- End quote ---
Yes. Unfortunately some key diagrams aren't there such as the score motor and scoring drums. I wonder if there was a separate manual for parts that were common to all Williams games?
skippy:
Spend 15 bucks and buy the manual/schematic it's worth it. The best way to get one of these em's working is to go through clay's tutorial at Marvin's, it will usually fix 95% of your problems. The player issues sound like problems with the player unit stepper, rebuild it per the marvin website.
Chris:
--- Quote from: Kevin Mullins on October 07, 2007, 05:09:05 pm ---
--- Quote from: Chris on October 07, 2007, 03:58:01 pm ---
* Player 2's thousands reel wont reset. It has two switches stuck open, but when I adjust them "correctly" the coil energizes constantly when power is on.
--- End quote ---
Check the 1-2 Reset Relay and make sure it's N.O. after reset on the corresponding switch.
--- End quote ---
Good call.... that was it! Thank you!
Chris:
--- Quote from: Kevin Mullins on October 07, 2007, 05:09:05 pm ---
--- Quote from: Chris on October 07, 2007, 03:58:01 pm ---
* In a 3 or 4 player game, the game gets stuck on player 2 and rarely moves to player 3. In a two-player game things progress normally. Very odd.
* Player 2's thousands reel wont reset. It has two switches stuck open, but when I adjust them "correctly" the coil energizes constantly when power is on.
--- End quote ---
Check the "Player Unit Disc" and the "Ball Count Unit Disc" out carefully. They may need cleaning or adjusting as well. Something may not be contacting correctly there to change players in four player mode.
--- End quote ---
Right again! This time the problem is mechanical, not electrical. There's an arm that pulls down, then moves the wheel as it puls back up, and after player 2 it doesn't have the strength to pull it up. Not only is there 25 years of grease on the mechanism, but it looks suspiciously like a spring is missing.
Chris:
--- Quote from: Chris on October 09, 2007, 10:51:20 pm ---it looks suspiciously like a spring is missing.
--- End quote ---
Well, based on this picture from the repair document, it looks like there's not supposed to be a spring there after all:
So I guess I'll just take it apart and clean all those pivots.
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