gun game
No, leave the connector on. You want the power supply to be under load when you adjust it. There is no need to stab the wires. There is enough of the copper trace showing for
you to touch the probe to the proper tabs.
Take a look at the board(s) in the gun priore to reassembling it. The connectors contacts ended with cold solder joints do to all of the bouncing around. Touch them up with some solder and clean the flux off with an old tooth rush and some isophropal alcohol.
After you are done with the adjustments and get into the rest of the setup on the game remeber to calibrate the guns. Hold the guns as if you were playing the game not like you were shooting competion target shooting.Priore, Clean the plastic or glass bezel along with the screen with the game off. I use windex and a cloth. Make sure the barrel of the guns are clear of junk. I allways love the gum in the barrel.
Overhead flourescent lights can effect the play of the game. Along with the brightness and contrast adjustment on the monitors remote board.
No need to calibrate everytime. I calibrate about once a month or if I change the games location.
D40 is a good start to free an item up and clean, but put some synthetic grease or silicon or lithium on the moving part(s).
Good Luck
RJ