(Topic ID: 120614)

W?D/Who Dunnit reel opto not reading


By wizzardz

4 years ago



Topic Stats

  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 3 years ago by Seatmandan
  • Topic is favorited by 1 Pinsider

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#1 4 years ago

I just finished replacing all three reel motors and the power driver board on my W?D.

All three reels spin, but I'm having a problem with the right reel opto not reading. I swapped out the opto board with another reel and the problem didn't move with the opto board, so I'm rather certain its not an opto board issue, but I'm at a loss as to what to check next.

Another issue I'm seeing (not sure if related) is that reels 1 and 2 tend to jerk a bit during the reel test (and the optos change state as expected) while reel 3 tends to turn smoothly in test (though doesn't register any opto state change). All the reels move smooth at power on and during play.

#2 4 years ago

The IPDB manual is of pretty poor quality, but I'd guess that switch 48, which is the right reel index opto, is processed by the 16 opto board. You may have a board problem, or a wiring to the board problem, or a connector problem.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#3 4 years ago

Thanks Chris...I'll check that out. Yes, the manual is something of a mess....part of the problem I was having.

You don't happen to know if the A-17223 is interchangeable (at least for testing) with either the A-16998 or A-16998-1?

#4 4 years ago
Quoted from wizzardz:

You don't happen to know if the A-17223 is interchangeable (at least for testing) with either the A-16998 or A-16998-1?

It sure is...
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#WPC_16_Opto_Board_.28A-16998.2C_A-17223.29
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info

7 months later
#5 4 years ago

Was this ever resolved? I have the exact same problem, but I traced the issue to the 9-pin Molex connector that connects the Reels opto harness to the main wire harness just to the right of the slot assembly under the playfield.

Easiest way I was able to test this was to put the machine in reel test, lift the PF up, disconnect the motor plug on the right slot reel PCB, and then manually turn the right reel until the indexing notch in the reel is aligned with the opto. Once i did this, I set the reel test to right reel. Since the motor is disconnected, the reel DOES NOT spin, and therefore allows you to mess with things until the opto reads "closed" you'll hear the beep when it closes.

It was driving me crazy until i grabbed that 9-pin molex and wiggled it, thus activating the opto.

#6 3 years ago

Ha, turns out molex was just fine- it was a wire that had broken free of it's solder on a target switch just above the slots on the PF.

These pins are very stressful sometimes! Makes the feeling of fixing something even better!

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