This is a cross post, from the DH forum,
So I've resolved several issues on my project DH, to the point where the game boots and plays. Now I'm chasing down other problems. On power up/boot, the auto plunger coil pulses 4 times, also occasionally the gun launch coil will do the same. I know these coils are on the same voltage connection #2 & #3 schematically. One thing that I am wondering about since they can both be actuated by the ball launch switch, (the gun handle trigger switch #11,) and I assembled this game from parts, is there a diode missing from the mix some where that I failed to account for?
Thoughts and advice appreciated!