Glen, very interesting information and I can identify with this. A few years back I got a call from a ham friend of mine who I did some professional work for at his home and while there performing those duties he asked if by chance I could repair his old Swan 350 radio. I said lets have a look. In a few minutes I tracked the problem down to a blown diode in the PS and we took a ride to RS to get one. Once replaced the radio came to life. He never forgot that. This fella was a Phd and was the dean of "outsource education" at the local state college. He called me once and asked me if I would like a job teaching. He needed an instructor to teach "electrical/electronic troubleshooting 101". I would only commit after a read the course syllabus. I did, and accepted the position. I had to teach basic troubleshooting of electrical/electronic equipment. Very entry level stuff but to give a basic understanding. The company felt it was good training for anyone being around such equipment. It was a fun thing.