(Topic ID: 255095)

Williams Diner Switch Issue

By toberlindacher

15 days ago

Topic Stats

  • 7 posts
  • 2 Pinsiders participating
  • Latest reply 14 days ago by toberlindacher
  • No one calls this topic a favorite


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#1 15 days ago

I have a Diner that has the shooter lane and the Ball Trough #2 that register together when either one is activated. I have continuity between the WHT-BLU and WHT-YEL circuit. I have looked very closely at the switch matrix and at the wiring. I have tested the diodes and installed a new shooter lane switch and diode. I can't seem to find the error. The symptom in the game is that when a ball is locked, the trough will eject two balls. Thanks for your help.

#2 15 days ago

Update: When I unplug the connector from the main pcb, the short goes away. Looks like I most likely have a board issue. Any ideas where to start looking?

#3 14 days ago

Update 2: The short goes away from the playfield switches when I unplug the connectors from the interconnect pcb. I think the short might be on that pcb or in a connector. I'm going to start plugging in connectors one by one until the short returns and that should give me some direction.

#4 14 days ago

The short is only present when I plug 2J18 which comes from the playfield switches to the interconnect pcb. I guess this means the issue is at the interconnect pcb?? Little help here....

#5 14 days ago

Figured it out! Traced the damn thing all the way to the switches for the coin slots. There's a short on the coin door which are part of that particular switch matrix area. I cut the wires on one of the switches and the short disappeared. I was wrong ealier after I tested the connector to the playfield not hooked up and the short remained. Anyway, its fixed. Ha!

#6 14 days ago

Glad we were here to help.

#7 14 days ago

lol...That's what I was thinking.

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