Howdy, fellow Pinsiders! I recently bought my first ever pinball machine which is White Water. I'm very inexperienced with electronics and don't fully know how a pinball machine functions, but I'm trying to learn as best as I can. Few days ago the test report indicated that I need to check switch 57 (Canyon Main). When I test this single switch on the upper playfield with a ball, it does not register anything. The soldering is in contact. Today I checked the backbox switch matrix board and everything there as well looks as it should in switch 57 area. I also tried to examine the under playfield area for loose connectors or wires, but couldn't find any. At this point I thought it would be best to ask for help as I don't know what to do next. How should I approach this problem? I apology my bad english as it's not my native language. Because of this, I might need as simplified instructions as possible. Any help is appreciated!

Thank you for your replies! I'll start with these directions and see if they solve the problem. It's most likely a simple switch problem, which makes me think this is a good way to start practicing repairing. Probably missed something already while checking. I will also order some replacement and spare parts as I don't have many of them yet. I'm also buying some basic tools to start with (I acquired the game only a few days ago). I'll report more after monday because I have to travel for a few days.

Bad expression there. I only checked the soldering joints were intact and that everything appeared physically fine.

I was able to fix the switch, thanks to your help! It simply seems to be a bad switch I have to replace. It does click when pushed but barely does so. I also went to check the diode more closely and the other switches in the area Djshakes highlighted. They were all fine. Now I understand generally a lot more about switches which is a good start. Cheers!