I am new to the forum and looking for a little help in my journey to resurrect an old Shuffle Alley into working condition once again. Here is my story...
I recently purchased what I believe is a 1953 United Shuffle Alley machine that perhaps has not been powered on for 50 years. I did my homework and took my time taking apart all the steppers and score wheels, cleaning and lubricating them. I also took apart the pin reset motor in the head (drilled out the rivets) cleaned and lubed that as well. I visually checked for loose wires, bad connections and mouse damage. Luckily all looked good. Yesterday was the big day! I powered it on!!!! The good news is it starts a game, the pins come down and the score wheels reset to 0. With the play field open I manually trip a pin switch with my hand the pins retract. Then I manually trip the rear puck switches with my hand and nothing. I would expect that to then trip the 1st shot relay, but it does not. Now, I manually trip the 1st shot relay, then trip another pin, then manually trip one of the rear puck switches the 2nd shot relay trips on its own, and the game advances to the next frame. I have checked, cleaned and adjusted the switches on the 1st shot relay and tested the coil with an meter, which is good. I am pretty new to this EM stuff so any help in further troubleshooting would be great. I am guessing I can try to jumper from the rear puck switches to the lugs on the coil??? Anything else I should be considering?