Shadow, The
Bally, 1994Shopping out a shadow and both diverters will only move one direction. In solenoid test they will move back and forth. When game starts I can only move them once and they will not move back. Switch test shows them activating. Sometimes I hear the solenoid try to kick but seems it doesn't grab enough to pull the arm.
The part I don't understand is why it works perfect in the test menu but not during game play.
Quoted from pincredible:Cabinet buttons work? Can't remember if they're optos. Can u test the buttons in switch edge test?
Cabinet buttons are mechanical and activate properly under switch edge test.
Update, Works fine in solenoid test but not by using the divertor cabinet buttons. Only the left direction on both sides is effected. Moving divertors right work fine. It appears to be a power / transistor problem.
I'll be watching this thread with great interest. My Shadow has the same issue. Left moves fine in test, but not during game play. Does it only effect Shadow's in Connecticut? 
So when you've moved the diverters..... And try again, do the coils fire for the same direction or neither coil works? Figure that out and we'll have a clue, if the right coil fires to move it right and you press the button again does the same coil fire in the mech or nada?
The same coil does not fire again. Press the button twice and it will fire, but the bad coil never fires. Same for both diverters. I cut the wires for both coils and used jumpers so I could test the coils using different pairs. And the Violet wires are dead for both the left and right diverters at all times.
In the test menu youve proved your wiring is good and both mechs and transistors are functioning as well as the coils, but in normal play ziltch? Wow stumped here. Im looking at my manual as we speak this sounds like a shitty problem! Just for f's sake pull your batts and restore factory reboot, sounds like a logic problem, reseat ribbon cables all that jazz.
Try reseating your ribbon cable between the MPU and driver board. My memory may be bad, but I think I've seen similar flakiness / symptoms as a result of that cable making a poor connection before.
If that doesn't help, try manually grounding the transistors with the game in game mode (and the coin door closed.) That might help you pigeonhole things a little further.
Color wires that are dead is Violet orange and violet green.
Agreed does sound like a CPU / Logic problem.
Seems like its "stepping" correctly becuase on your third press the same direction fires, you're just not getting the signal to fire on the 2nd press.
Quoted from wisefwumyogwave:In the test menu youve proved your wiring is good and both mechs and transistors are functioning as well as the coils, but in normal play ziltch? Wow stumped here. Im looking at my manual as we speak this sounds like a shitty problem! Just for f's sake pull your batts and restore factory reboot, sounds like a logic problem, reseat ribbon cables all that jazz.
Beer for you. I removed the batteries and pulled the wires off the CPU board. Put that all back together and WTF it works now!
Quoted from eabundy:Beer for you. I removed the batteries and pulled the wires off the CPU board. Put that all back together and WTF it works now!
Thats awesome! Glad to hear
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Killingly, CT