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DT9205A Multimeter: Identifying & Replacing Burned-Out Resistors for Current Measurement

Rafcio_3D 28461 6
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  • #1 16401848
    Rafcio_3D
    Level 5  
    Hello
    I have a DT9205A multimeter, in which two resistors on the current measurement path burned out and I wanted to replace them. Unfortunately, there are no markings on them. Could you help me find the right resistors that I could mount there? :)
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  • Helpful post
    #2 16401864
    Adam-T
    Level 41  
    And we have to guess what resistors you burned. There are markings on the pcb.
    You have a diagram and see what went up in smoke. ;)
    DT9205A Multimeter: Identifying & Replacing Burned-Out Resistors for Current Measurement

    Moderated By telecaster1951:

    3.1.18. Do not send links that will cease to be active after some time. This will make the discussion meaningless.
    corrected.

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  • #3 16410177
    Rafcio_3D
    Level 5  
    The resistors that went up in smoke, marked R16 and R17, I marked in the picture.
    DT9205A Multimeter: Identifying & Replacing Burned-Out Resistors for Current Measurement
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    #4 16410710
    Adam-T
    Level 41  
    If I'm not mistaken, R17 is 0.99 Ω R16 is 27 Ω.
    Try putting in 1 Ω and see if the measurements will more or less agree.
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  • #5 16411823
    Rafcio_3D
    Level 5  
    I soldered in a 1 ohm resistor as you wrote and it started showing current :) I'm just not sure if it's good.
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    #6 16412649
    Adam-T
    Level 41  
    You need to compare with another meter, i.e. connect two in series.
  • #7 16413595
    Rafcio_3D
    Level 5  
    Okay, thanks for your help :)
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Topic summary

The discussion revolves around the DT9205A multimeter, specifically addressing the issue of burned-out resistors in the current measurement path. The user initially sought assistance in identifying replacement resistors, as the original components lacked markings. After some back-and-forth, it was determined that the burned resistors were R16 and R17, with suggested values of 27 Ω for R16 and 0.99 Ω for R17. The user successfully replaced R17 with a 1 Ω resistor, which restored functionality, but was advised to verify accuracy by comparing measurements with another multimeter.
Summary generated by the language model.
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