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Video Blog 137 - Keithley 440 Digital Picoammeter Repair & Test

DISCLAIMER: This video is educational only, so if you decide to do the same yourself then you are on your own, I can't be held responsible for any problems/issues/damage/injury that may occur if you decide to follow this blog and try it yourself.

VIDEO BLOG

Donated by Dan from England, this Picoammeter is in need of some calibration on it's Picoamp range.
And after some re-calibration & testing it suddenly stopped working, so needed repair also!

Here's Dan's EEVBlog thread on the unit before it came to me:
https://www.eevblog.com/forum/repair/vintage-keithley-model-440-picoammter-repairrestoration/


Video -