Harmon 4200B Selective Voltmeter Fix and Repair - Part 1

Explore the operation and repair process of the Harmon 4200B Selective Voltmeter in this 42-minute tutorial video. Dive into the technical aspects of this specialized test equipment while learning about its functionality and troubleshooting common issues. The video includes historical context about Harmon Industries and the evolution of printed circuit boards, with references to technical documentation like the Harmon 4200A Instruction Manual from 1974. Perfect for electronics enthusiasts, repair technicians, and those interested in vintage test equipment restoration.