Hello all,
Hoping for some assistance on a United Cheetah shuffle alley I picked up. I got it in non working, non tested shape. I replaced the coin step up coil and coin relay coil as they were burnt. Reattached a few broken solder joints and turned it on. It briefly worked... sort of. I was able to throw a one frame and the spare then the game became unresponsive. Now after a power cycle the coin chute switch is not engaging the coin relay coil. On start up the game over coil is engaged. You can select/change games. If you manually trigger the coin relay coil start relay pulls closed, all the pins reset and the relay bank reset coil resets the game over and start relays. At this point I’d assume a game is ready to play, but you can still change the game type and throwing the puck does nothing. I’m at a bit of a loss on what the sequence of start up should be and where to go from here ? I welcome any and all info ! And please bare with my being new to these !

Thanks in advance for your time !

It does not appear to energize. After posting i starting inspecting and it seems most of not all switches need a good cleaning. Not 100% sure I understand the desirable gap for the switches ? Any advise on general going through of these machines would be welcomed

Thank you. I’ve gone through the step units and ensured all reels and the such are clean and free and all coils can be actuated by hand. Is there more to investigate on these types of items ?

As an update - my lack of understanding the machine had me perplexed
But ! I found a semi local em tech who does service calls so he is coming this weekend to do some schooling on me so I can understand how it’s suppose to work and assist me (or really me assisting him) to get it going. Super excited to learn and I appreciate the responses !

Update ! Machine is close ! It can be played but occasionally skips rounds. It appears the 2nd shot coil is staying closed. To get it playing you just trip a rear switch and the round resets and the next player can play as normal. The red lights on the table turn on briefly as an aside. I’m wondering if the coil is staying magnetized or something as it appears it’s not powered but the actuator stays tight against the coil (even does this if you power off the machine in the faulted state). Thoughts ?