If you want to get into some FUN electronic repair that pays BIG MONEY go to college and learn to be a Biomed Technician. This guys make $50,000. per year repairing hospital equipment and you get to work with a lot of young attractive unmarried nurses in hospitals. Southern Illinois University at Carbondale Illinois has an excellent Biomed Technology Program.
https://www.youtube.com/watch?v=iyFcUJvVKMg&feature=related
Going back to the 80's, a lot of TV Engineers moved to repairing medical gear, I don't seem to remember many of them stayed there very long?.
But certainly the pay was a LOT higher, but the equipment is expensive, and sold at a profit - most domestic electronics is dirt cheap, and sold at a loss