Fish Tales
Williams, 1992You're currently viewing posts by Pinsider chrishibler.
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Why did you replace ALL of those parts when only the 5V circuit has issues?
Have you measured incoming DC voltage?
Are you sure that C5 has not had a through hole pulled and that it is still in circuit? Buzz between C5 and BR2 DC outputs.
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Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info
BR2 and C5 might be solid, but are they connected to each other? I’m wondering what the LM323K regulator will do with unfiltered fully rectified AC.
Measure between the positive output of BR2 and game ground, like the backbox braid. Clip a wire to the bridges positive lead for safety. Take an AC reading there too. It should be millivolts only.
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Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info
Quoted from gameover1173:All the traces are fine in that area
Dude. You're killing us. What leads you to conclude that "all traces are fine". Visual? That won't cut it. You have to buzz for continuity.
You are talking to a few folks that have a ton of experience. Please take this opportunity to follow the direction suggested and learn.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from gameover1173:Dude
I have buzzed every trace to every bridge and cap with a meter. I have metered all the bridges and get between 5-7 on diode test
All the big caps are new as well.
I even used a known working board to verify the traces were correct
What else do I need to check
Thank you for answering the question definitively.
If I had the board here, I would meter at various points to see where the voltage stopped.
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Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from barakandl:Counterfeit LM323K?
...there are a LOT of those being sold...sad...
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
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Chesterfield, MO