MJLorton Solar Power and Electronic Measurement Equipment Forum
Youtube Video Episodes => YouTube Video Episodes => Topic started by: SeanB on May 08, 2025, 02:48:16 PM
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A Look Inside #19 - Harmon 4200B Selective Voltmeter - Fix/Repair - PT4
Pt 1
https://www.youtube.com/watch?v=P614i6uTfqk
Pt 2
https://www.youtube.com/watch?v=abk_cnfQcko
PT3
https://www.youtube.com/watch?v=XjG5dkBeCL8
At look at the Harmon 4200B Selective Voltmeter, it's operation, fixing issues.
History on the Harmon Industries company:
https://www.encyclopedia.com/books/politics-and-business-magazines/harmon-industries-inc
PCB History:
https://how2electronics.com/history-printed-circuit-board-pcb-nextpcb/
Harmon 4200A Selective Voltmeter Instruction Manual - April 1974:
https://www.scribd.com/document/288855591/Harmon-4200A-Selective-Voltmeter-Instruction-Manual-April-1974
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