🔴 Datron 4700 Calibrator Repair Part 1 - No. 823

I begin the repair of a Datron 4700 Multifunction Calibrator.

The Datron 4700 is very similar to the Datron 4705, Datron 4708, as well as the Datron 4200A and Datron 4000.

I go through each of the main boards and inspect them for problems, and then repair or refurbish the boards as required.

This is Part 1, there are more videos about the repairs so check out the playlist and subscribe to make sure you don't miss them when they are released.

Part 1: https://youtu.be/Fvf3GMZI46s
Part 2: https://youtu.be/s2plnAavyKY
Part 3: TBA

0:00 - Intro.
1:00 - Opening the case.
2:17 - The reveal.
4:19 - The Digital Assembly.
7:16 - The Analogue Interface Assembly.
7:44 - The Reference Assembly.
10:39 - The DC Assembly & Output Control Assembly.
13:05 - The Sine Source Assembly.
14:35 - The AC Assembly.
16:16 - The Current / Ohms Assembly.
17:07 - The FIRST Fault.
18:30 - Refurbishing The Current / Ohms Assembly.
23:18 - The Power Amplifier Assembly.
24:55 - The 38V Power Supply Assembly.
27:00 - The In Guard Power Supply.
27:23 - The Out Guard Power Supply.
27:40 - Refurbishing The In Guard Power Supply.
35:17 - Power Supply Summery.
36:01 - Power Supply +/-15V Rail Fault Tracing.
39:10 - Patreon Supporters: https://defs.link/?u=fcb3a1

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