Hello, I am studio Owner and audio engineer in Cuenca Ecuador, (for those of you who don't know that's in South America). I have a significant number of dynamic, condenser, Ribbon and tube Microphones, But no way of repairing them. there are no trust worthy technicians here and Shipping back the the manufacturer is not an option. I am trying to educate myself in order to both repair my microphones and offer my services to other local studios and live venues. I have a basic algebra knowledge base and am looking for a course or book to push me forward. I have bought a copy of the art of electronics and have started to read that but any other help would be greatly appreciated. Thank you
Peter Boynton