Quoted from Geetarslinga:
Makes me think I probably shouldn't take on hobbies that I know nothing about lol. But anyway......
Nonsense!! We were all new once and i don’t know the real stats but i’ll make them up and say 80% of people on here didn’t know anything about repairing pins until they bought one. As long as you aren't afraid to ask for help, and listen anD learn as you go you will know how to fix these things. You already have some heavy hitters on here (I don’t include myself on that list yet) so i’m confident you will get this running. Pinside has a 100% success rate for helping with my tech problems.
You cannot hurt anything by going into diagnostic mode. There are a series of tests to check sounds, music, coil function, lamps, closed switches, detect new closed switches etc. Then you can scroll into audits and game adjustments. Don’t worry about these for now.
So for the next things you will want to have glass off, playfield down and power it up. Pay attention to any messages comin up on the display. Then open coin door. Inside you have the three buttons:
Advance Button - usually closest to door.
Center - auto up / manual down.
Highscore reset. Don’t need to use this one.
First thing is to press center button into the down position. Pressing advance once gets you into music test. Now press center to bring it back to auto up. Now each time you press the advance button you cycle through the various test. Once you find the test you want, push center button back to manual down. Advance now lets you manually move through that test.
The interesting ones for you now are coil test (to see if saucer eject will fire). Switch levels will indicate which switches are currently closed. If you have balls in the game you will expect to see the trough switches come up.
Switch edge test is very useful. Here the display will tell you which switch is closed when you depress it. Use a ball not your finger for best results. If you put a ball in the saucer do you see it one the screen? If so is it the correct switch number as per the manual and is it the only switch registering?
After you do this you will start to develop a troubleshooting roadmap .
Then go mess around with the other tests. You will get the hang of what each one does. I guarantee you will hit wrong button a few times, move to the next test by accident, curse, then reset game and start over.