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EEVblog #1336 – DT71 LCR Tweezer Destructive Teardown + Lab Update

Destructive teardown o nthe Miniware DT71 LCR meter Tweezers Plus a lab move update. Forum: ...


  1. I have a BM 257 that did the exact same thing. Before I tear it apart can somebody suggest the proper part to replace the bad inductor with. If you can use a 0 ohm resistor can you simply use a jumper. I assume this would not affect the accuracy of the meter and with the other protection in the circuit I don’t think there’s much chance of damaging anything.

  2. Finally! Dave gets a product repair video that he actually repairs! How long has he bought stuff that either couldn’t be fixed, or already worked? Now he finally has one that is broken and fixed it!

  3. Hi, I would more likely suspect that there is an issue with the board flexing at that point. The part is located right at the lead jack where there can be lots of stress — depending on how vigorously the user plugs/unplugs the leads, or how tight a fit the test leads are. The PCB also looks quite narrow at that point so the cutouts provide a weak point right under the two inductors and the PCB could hinge there. Probably a longer-lasting repair would be to use a bead on wire inductor, or just mount the SMD one vertically and connect the other side to the trace with magnet wire. Cheers and get better soon Dave!

  4. With havin so much written content do you everrun into any problems of plagorism or copyright infringement?My website has a lot of exclusive content I’ve either authored myself or outsourced but it appears a lot of it is popping it up allover the internet without my authorization. Do you knowany ways to help stop content from being ripped off?I’d really appreciate it.

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