Dave discusses the switch matrix - what it is, how it works, how it can go wrong, how to diagnose it, and how to fix it.
0:00 Introduction
0:35 What is the Switch Matrix?
2:42 These Schematics aren't Right!
4:47 How Does This Work?
6:21 What if it Goes Wrong?
9:00 How Do You Diagnose a Switch Matrix Issue?
15:23 How Do I Fix This?
16:09 Let's Play a Game!
Note: Pinball switches use 1 1N4148 diode.
