If you don't know what yak shaving is, watch this video.
That's basically how my projects always go, which is why I don't like starting any, ever. Never enough time to do all the other things you have to do before doing the thing you set out to do.
I am working on cleaning up an area next to my house to do some painting and other maintenance stuff. I have heavy things to move that require a hand truck. I use a hand truck rated for 750 pounds to move things that weigh 300-500lbs regularly. Apparently the welds on the wheels aren't rated for that much and they keep breaking. In the process of replacing a wheel and repairing the broken one I was going to have to air up the tires. I pulled out my harbor freight special pancake compressor, set up fittings on a new hose and plug everything in. I go to switch on the compressor... nothing.
Since it's a 3 day weekend and I have no timeline for my other project, I decided to figure out what was wrong with this compressor rather than pull out my heavy compressor.
I pull the cover off, check all the electrical connections, wires, etc. Nothing out of the ordinary. I developed a trick to quickly narrow down problems with electrical systems. I use a current detector and follow the current through the wires until I find where It's not going through wires when it should be. In this case I quickly determined it was the switch. I pulled it out and tested it for continuity, and sure enough, the switch is btoken. Not having spare compressor switches sitting around, I figure I'd pull the switch apart and see if I could fix it. Of course the spring goes flying the second I pop it open. I find it, but have no clue how the thing went together.
I do happen to have some other spare equipment sitting around that may have a rocker switch I can cannibalize. After rummaging a few minutes, I find one, pull it out, compare the ratings and size. It's a little skinnier, but I shimmed it up to make it a snug fit. I put everything back together, plug it in, switch it on, presto! Working like a charm again, or at least as well as it ever did.