Connect with us

Multimeter repair

Discussion in 'Troubleshooting and Repair' started by pidja105, Feb 14, 2016.

Scroll to continue with content
  1. pidja105

    pidja105

    106
    1
    Oct 16, 2015
    Hello,
    My multimeter DT-830D shows only 1 on screen when is not load on all functions, and won't measure anything only shows 1, speaker make constant pop sound that is not very loud, when I short speaker terminal and random pins on the board that show random numbers. Screen is good connected to board, I can buy new multimeter, but I wish to repair this one.
     
  2. Kabelsalat

    Kabelsalat

    125
    24
    Jul 5, 2011
    Could it be dirt / moisture that has get inside yout meter?
     
  3. pidja105

    pidja105

    106
    1
    Oct 16, 2015
    No.
     
  4. 73's de Edd

    73's de Edd

    2,872
    1,216
    Aug 21, 2015
    .






    Sir pidja105 . . . .





    Just an initial stab, but is the battery "hot"?
    Then put the unit in ohms mode and then use your wetted fingers in progressively compressing the probe tips and switching thru all of its ohms ranges to see if you can get that 1 to change to any other digit.

    Looks like its using the old and tried DVM workhorse . . . . the ICL7106.

    Waiting to see if that one digit will change.

    Circuitry:


    [​IMG]




    73's de Edd

    .
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-