Who ya gonna call?
It doesn’t matter how good your equipment is. Sooner or later something is going to break. And you can pretty much bet that it will break at the worst possible time.
You can also pretty much bet that it will be the thing you need most right at that precise moment. That’s just the way of things. Machines are not infallible. They all have moving parts and most of the newer ones also have a lot of incomprehensible non-moving parts like circuit boards and mysterious little black square things with wires sticking out of them.
Even if your malfunction occurs at a convenient time like in the middle of the day when all of the repair people and parts dealers are still at work and you get totally lucky and the repair guy is just sitting there waiting for your call, you can bet that you are going to be out some serious dough.
My father-in-law used to run a big cattle ranch in Nevada and he always said that you’d better know how to fix stuff yourself. They had a shop with welding gear, machine-shop equipment and enough tools to tear down the space shuttle. If something broke down, they fixed it. There was no calling the repair guy.
I have never been too good with electronics but I know how to replace switches, motors, capacitors, cords and most of the other basic stuff that falls more into the category of electricals. And I have always been the go-to guy for any mechanical failures on my equipment. Over the years I learned how to fix just about anything that could break in my shop. And if I didn’t know about something specific, a call to the manufacturer would almost always produce a tech support person who could clarify things.
I have a friend who told me that he once watched a repair guy standing there scratching his head (at $125 per hour). He told the guy, “Hey look, if you don’t know how to fix it, just say so. I don’t want to pay you $125 an hour to scratch your head. I can scratch my own head for free!”