I just need a good pic of someone's functional knocker solenoid. I've got one that is missing a spring, just wondering if it needs one or if it's the wrong solenoid altogether.
(Topic ID: 246978)
You're currently viewing posts by Pinsider bigun.
Click here to go back to viewing the entire thread.
Ok, so the machine doesn't have a stock board. It's a Rottendog MPU327-1, and I'm having issues finding schematics for this.
Found schematics: http://www.arcadeshop.com/i/692/williams-system-3-to-7-mpu-driver-board.htm
Now, looks like Anywhere between Q41 and IC26 may be the issue. Going to put a logic probe on pins 13 & 7 on IC3 during a solenoid test to see if I get anything on either side and go from there.
Promoted items from Pinside Marketplace and Pinside Shops!
Washington Court House, OH
You're currently viewing posts by Pinsider bigun.
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+!
