A $1 hamfest multimeter teardown: Micronta 22-201U

This one has been sitting since the summer- it took a while to get all the rain to evaporate from the inside! When I grabbed the pour fella, it had water up to the mirror.

$1 takes it!

$1 takes it!

The back wasn’t much better looking either:

After drilling out the lone rusty screw, “we are in like Flynn”:

Who still remembers The Conductor audio cell”?

OLYMPUS DIGITAL CAMERA

 

Not much on this side

That’s one way to do a two sided board- with wire jumpers following(kinda) silk lines. Marking component values is always appreciated though.

Crusty. Though there appears to be some lacquer holding them in position

Crusty. Though there appears to be some lacquer holding them in position

Sure, you can run that wire right over the mounting screw.

Sure, you can run that wire right over the mounting screw.

 

There is your problem (at least one of them)

Schematic diagram from the user manual- those were the good time!

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Resources:

User manual

 

 

One thought on “A $1 hamfest multimeter teardown: Micronta 22-201U

  1. Thanks for the trip down memory lane. I had one of these back in my high school days. I used it until it became too battered to work. Then I bought another. (Couldn’t afford a DMM back then.)

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