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Archive for May 21st, 2017

Beckman DM73 Circuitmate: RIP

I’d added Mad Phil’s trusty Circuitmate to the tool kit I carry along to Squidwrench:

Beckman DM73 - new ground clip

Beckman DM73 – new ground clip

Over the last few months it became increasingly erratic, eventually got to the point where slight pressure on the case would blank the display, and finally didn’t turn on at all. Yes, I replaced the batteries.

So I took it apart:

Beckman DM73 Circuitmate - case open

Beckman DM73 Circuitmate – case open

Nothing seemed particularly broken and, even after resoldering all the joints, it continued to not work at all:

Beckman DM73 Circuitmate - PCB

Beckman DM73 Circuitmate – PCB

If you want to try your hand at instrument rehabilitation, let me know.

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