Going through games in the basement of where I work I found a Hogan’s Alley and a Duck Hunt chip set. Both turn on, but neither will play the game without making a loud buzzing sound. This means that the system does not see the guns in the holders for the game. However, even when the guns are attached I am not able to shoot said guns.

One of the things I thought was wrong was the fact that all of the guns that I have are modified. These are what I have of the guns, but I have not started working on a solution. I ended up putting Super Mario Bros and Excitebike in the same cabinet and calling it good.