Yeah, I've done some appliance repair too.
Our dryer was squealing like crazy, and found that it was just a bearing that I was able to replace for about $20.
Our big electric range burner kept turning off and turned out to be a bad receptacle that cost $6 to replace. Very easy to do as well. There's also a bad variable resistor on one of the burner knobs, so I'm going to switch it out with one from a burner we don't use, and that one will just be dead.
The popcorn popper I used for roasting coffee had a bad switch, so I removed the one from an old grinder that we were tossing and replaced the one in the popper. In fact, in all appliances I find, I now remove any useable parts, like motors and switches.