Taken me 2 years to get this running. Had to walk away several times so i can approach from a fresh mind and different angle.
The bronze bearings in the 2 main motors had detreriorated and become rough preventing the motor from turning correctly. I sent this to my dad in UK to fix who turned me up some new bearings on his lathe.
Main motor was burnt out and as soon as the game started, the coil would overheat and cook... replaced this with the same spec one from a Williams gun game.
Each time you fired the gun, the fuse would blow... fixed this by placing a spacer between the coil and metal housing. housing had also become magnetised so neutralised this by putting a battery across it and reversing the polarity.
When game started.. all coils would fire and blow the main fuse.
had me stumped for a long time this.
Then after a long break from it, my mind started to wander back to this problem. Took the task on tonight and after about 2 hours, noticed the cams were running backwards which means the control wiper and disc would keep running and never start at zero position ( this game has a continuous motor, so having something run all the time is expected).
Silly me..... when i replaced the coil, i put it in upside down which meant it ran backwards... cams have a triangular notch in them and so if it runs backwards the leaf switch just runs up a ramp.. drops down again and never closes.
Turned this around tonight and ive had a few games out of her...
.. now all i need to do is make the blacklight run on 240V from the step down input and i have a 100% cool gun game!
Feels lke its been a long journey on this fix ( well 2 years is a long time!) but in the end it really was just a burnt out coil and bearing... bloody hell... lot of effort to get there!
heres a link to the game.. is a beauty
http://www.pinrepair.com/arcade/spacgun.htm
