A bit off topic but I thought I'd mention (FWIW) ...
Many years ago I was at my dentist and he was grumbling about his exam light being broken. He said he had to call an electrician, but didn't want to because they were very expensive, and didn't do well working on his delicate equipment. To make the story short, I fixed his light. A few days later his office manager called to see if I could fix their call light system, which I did. From there it snowballed and I was fixing all sorts of stuff from dentists, doctors, and vets around town, all through word of mouth. (I refused to work on stuff like x-ray equipment, or other machines that they actually used on patients)
I stopped doing it because I accepted a job offer from Motorola, but I believe I could have, and a person still could, make a good living as a electrical Mr. Fixit specifically for vets and med offices.