I've tried to research my issue but have not found anything to solve it. My Dirty Harry have always worked fine. It has been sitting for a few months now while other games got more attention and suddenly the gun stopped working today. The gun didn't do the normal calibration at startup since memory is saved with fresh batteries.
The gun started moving really slow with a squeeky noise when I select load gun for HQ shot. When the gun fired the ball it moved back to its original position quickly as normal. I went through test report and it said "Gun Broken". I guess the game removed the gun from the skill shot since I can't select to load it anymore. Next test report says to check switch 44 gun chamber. I think that's an opto, but I could not find it when I checked quickly. Also during gameplay the gun started moving by itself slightly and its lamp flashed even though it's "broken".
Finally, the right chopper ramp gives a slam tilt reset every time the ball enters the ramp. This has never occured before. Could it be related to the gun issue? The gun switch 44 and right ramp entrance 55 are not on the same column, they are however on the same connector from the CPU board. I've never seen a switch issue reset a game. Could there be a short at connector on the cpu board?
Very dumbfounded here...any help is appreciated.