A Look Inside #19 - Harmon 4200B Selective Voltmeter - Fix/Repair - PT3

In this video:
At look at the Harmon 4200B Selective Voltmeter, it's operation, fixing issues.

History on the Harmon Industries company:
https://www.encyclopedia.com/books/po...
PCB History:
https://how2electronics.com/history-p...
Harmon 4200A Selective Voltmeter Instruction Manual - April 1974:
https://www.scribd.com/document/28885...
----------------------------- Click "Show more" ------------------------------------------
** Programming Electronics Academy **
Sign-Up below to join over 20,000 awesome people to learn from our Arduino Crash Course - it's 12 optimized video lessons to get you up and running quick with Arduino.
https://www.programmingelectronics.co...
------------------------------------------------------------------------------------------------------
My website and forum:- http://www.mjlorton.com
Donations and contributions:- http://www.mjlorton.com
------------------------------------------------------------------------------------------------------
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
Bitcoin (BTC) Donations: 1K7PeF55e7ssE7W3WVCoa7c4j2PHzy6ASv
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
**********************************************************************************
Music clip from Youtube Music Library - Phase Three by Huma-Huma
**********************************************************************************