05-03-2015, 05:19 PM
I'd recommend you see if you can get hold of Chas Miller's book on vintage radio audio repair. It's all written so you keep your interest going and learn gradually. For example, one very basic chapter tells you all you need to know about Ohms Law for practical repair. The first diagram you tackle is a very simple 3 valve portable. It's written with an emphasis on practical repair of old radios without doing more theory than you need.
