(Topic ID: 290328)
Linked Games
Party Zone
Bally, 1991
Topic Gallery
You're currently viewing posts by Pinsider emsrph.
Click here to go back to viewing the entire thread.
Quoted from emsrph:Check for AC power at J115 for the brown string #1 at pins 3 and 8. If the power is there then it’s probably in the triac components or the J120/121 connector.
Borrowed this diagram from the Pinwiki https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#General_Illumination_Problems[quoted image]
Meant to edit to add link, not quote
Quoted from phishrace:If the power isn't there (J115, pins 3 and 8), check the connector coming out of the transformer that leads to J115 for burnt pins. Pretty rare for those triacs to go bad.
Yep, exactly.
Power could also be at the J115 connector but it’s header is torched.
Suggest working backward and forward on the power chain to see where the voltage is being lost.
Let’s get the party back into this Party Zone.
Quoted from alexanr1:Well, I figured it out. It was not the TRIAC which I thought it really didn’t think it was bad after testing with my multimeter.
It ended up being the actual J115 ground wire (yellow-white) having a poor connection in its plug (Not the board side, but the plug itself) I tested back all of the traces and had great continuity everywhere and per chance checked them as well just being thorough, sure enough it had broken lose.
I wonder if the ground had a very bad connection and could a surge have made the barely bad connection finally fail. Just odd when I powered it on the came on and then went immediately out.
Thanks to this great community for sticking with me and providing additional thoughts to drive me to trace more.
Special shout out to emsrph and Roamin!
Excellent, glad you figured it out!
Promoted items from Pinside Marketplace and Pinside Shops!
Columbus, IN
You're currently viewing posts by Pinsider emsrph.
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+!
