Chesterfield, MO
The switch, as wired in the last pic, is correct.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
(Topic ID: 261961)
Linked Games
Shadow, The
Bally, 1994
Topic Gallery
You're currently viewing posts by Pinsider chrishibler.
Click here to go back to viewing the entire thread.
Quoted from JeanPS71:But I still get "GND. Short Row 1 Is stuck closed"
Remove all lower connectors on the MPU.
Does the Ground Short Message go away?
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from Djshakes:I had to just replace my opto board.
Djshakes , Those are very repairable....
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
JeanPS71 MOST Ground shorts are caused by MPU or opto board circuitry and are not a result of PF wiring.
Disconnect the opto board. If the short indication goes away, then the opto board probably has a failure
Otherwise, a logic probe is your best friend in tracking this down.
Operation of the 3 switch matrix LM339s on the MPU needs to be verified.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from JeanPS71:Ordered some spares I'l keep you posted
Spare LM339's? Good call.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from zaza:24-opto-board
It's actually called a 24 inch opto board or sometimes a long hop opto board.
https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#24_Inch_Opto_Board_.28A-15646.29
And, it doesn't work like any other opto board, as zaza is pointing out. It works more like an IR TV controller. It sends and expects to receive a certain frequency of IR. This is to avoid interference by other light sources over the length of the much longer beam.
Often the 24 Inch Opto Board is the issue and not the optos themselves. Often, the inductor on the board vibrates itself right off the board. They can be repaired, or HomePin makes a replacement that can be sourced here in the US.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from JeanPS71:Yesssssss I love you people.
Like zaza said.....I changed the optocoupler on the board and it's up and running again.
What a great call zaza !
—
Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info
Promoted items from Pinside Marketplace and Pinside Shops!
Hamilton, ON
You're currently viewing posts by Pinsider chrishibler.
Click here to go back to viewing the entire thread.
Reply
Wanna join the discussion? Please sign in to reply to this topic.
Hey there! Welcome to Pinside!
Donate to PinsideGreat to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
