I Tried to Resurrect a 70-Year-Old Heathkit M-1 Handitester

Описание: I have a soft spot in my heart for old technology, so when I came across this Heathkit M1 analog multimeter at the Bar-Z Summer Bash swap meet last year, I just had to have it. We are going to try to get it tuned up and working, but it's 70 years old, and from the looks of it, it's been a hard 70 years. Vintage electronics are cool, but sometimes things don't go to plan.

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Tools used in this video:
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Wiha Precision Screwdriver Set (Amazon): https://amzn.to/4cDw8FO
Knipex Precision Curved ESD Tweezers (Amazon*): https://amzn.to/4hSnnHI
Knipex Electronic Pliers Set (Amazon): https://amzn.to/4baxvJt
Siglent SDM3065X Bench Multimeter (Amazon*): https://amzn.to/435NVwO
Rigol DP832 Triple-Output Power Supply (Amazon*): https://amzn.to/2FHtSfz
Banana to Alligator Test Leads (Amazon*): https://amzn.to/304uki5
Decade Resistance Box (Amazon): https://amzn.to/4su5Zh3

Raw Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...

00:00 Intro
02:10 Testing DC Voltage Ranges
05:49 Testing DC Current Ranges
07:44 Testing Resistance Ranges
09:53 Uh Oh! 100mA DC Current Range Looks Bad!
11:02 Don't Turn It On, Take It Apart
14:22 Strip The Meter Movement for Testing
15:49 Testing the Meter Movement
19:36 Removing the Meter Movement
22:02 Under the Microscope
23:50 Magnetic Contamination!
25:27 Re-Testing After Cleaning