Video Blog 185 - HP 3458A 8.5 Digit Multimeter Repair - Part 1

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Published: Saturday, 06 June 2026

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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

I acquired a faulty 3458A quite cheap in order to try out an A3 board U180 replacement (called the NU180) which fixes catastrophic & expensive drift problems on these meters.
But, does this unit exhibit the fault I was hoping for, or something completely different? Plus, there's plenty other repairs to be made along the way.

YouTube Video - Part 1: