I have a problem with a Chicago Coin Sondstage machine. This is my first pin repair and from what I've experienced probably not the best one to start on. Regardless, I like a good challenge.
The game seems to function on all aspects but there seems to be an issue with the 10-90 scoring. The coil frame for the 10-90 relay was broken when received but the score would advance when the relay was activated manually (Coil was not wired).
I replaced the coil with the same numbered coil, after it was wired and powered on the coil remains stuck energized. After researching on this web, I checked the associated score reels and they are clean and nothing seems stuck. I wedged a piece of cardboard between the coil to keep it open and powered the machine on, there was a constant blue spark between the leaves indicated with a red arrow of the attached picture.
I assume you would follow back from those relay contacts or score reel to the playfield and find an issue there. I was expecting to see all the wire colors coming to the 10-90 relay shown on the wiring diagram but I must not be reading it corrrectly. Has anyone experienced this before or have any advice?
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