Multimeter buzzer - replacement

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  • tmcw
    Badcaps Veteran
    • Oct 2010
    • 382
    • Ireland

    #1

    Multimeter buzzer - replacement

    I have a multimeter that had a fall a few months back, the continuity buzzer stopped working correctly, instead of a nice clear tone, it was making a faint rattle noise, a bit like a Geiger counter detecting little radiation.

    Anyway, I was looking to see if I could find something on the internet, but can't find any for sale, and very few pictures; I've attached a photo of what it looks like. It's a very thin metal disk (about 5 or 6 stacked would approach the thickness of a coin), 20mm diameter, plain on one side, and a smaller white disk (15mm diameter) on the other (I presume that's the diaphragm).

    I have a much thicker buzzer salvaged from a busted UPS, and it works fine when connected where the original one was, so it must be the original disk buzzer that's broken. I could probably get it in somehow, or maybe a smaller motherboard speaker, or even one half of a headphone set might do the job, but if I could get the proper disk that can be mounted to the circuit board, that would be best.

    Anyone have any ideas, either where to get a replacement, or another elegant solution? I haven't seen any in a loooooooooong while, but are these buzzers like the ones in those musical greeting cards?
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Multimeter buzzer - replacement

    That is piezoelectric transducer, not sure if you can get it from Mouser or Digikey or not.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271

      #3
      Re: Multimeter buzzer - replacement

      396 "in stock" piezo buzzers at digikey

      http://www.digikey.com/product-searc...s=piezo+buzzer
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      Comment

      • tmcw
        Badcaps Veteran
        • Oct 2010
        • 382
        • Ireland

        #4
        Re: Multimeter buzzer - replacement

        Thanks, I know what I'm looking for now. I'm on the other side of the Atlantic from yourselves, so will look for somewhere a bit closer if I can't salvage one out of something else (I'm in no rush to replace it). I might be able to get another obsolete UPS or other device that has one. The test buzzer I referred to in the first post has a similar transducer inside its housing, along with a small circuit board, but it is also of larger diameter than the one that was in the multimeter, I don't know how much of a difference that will make, but I'll see if I can find one the same size or smaller as the original.

        Might find one in an old modem, for example, that might work.

        Thanks again.

        Comment

        • retiredcaps
          Badcaps Legend
          • Apr 2010
          • 9271

          #5
          Re: Multimeter buzzer - replacement

          ebay?

          http://www.ebay.com/sch/i.html?_saca...buzzer&_sop=15
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          We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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          Comment

          • ben7
            Capaholic
            • Jan 2011
            • 4059
            • USA

            #6
            Re: Multimeter buzzer - replacement

            Get a bunch of cheap small toys from the second-hand store. Take them apart, you will likely find another piezo device.
            Muh-soggy-knee

            Comment

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