Shorted resistor replacement

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  • Welchs101
    Badcaps Veteran
    • Sep 2008
    • 979
    • USA
    #1

    Shorted resistor replacement

    Hi,

    Problem: I am trying to repair an LCD monitor and i came across a "shorted" resistor (see enclosed photo). I am trying to find a replacement resistor but i am having problems. From the color code (red, black, white, gold) the value of the resistor is 20000MegOhm........but this does not seem right. Seems to high.

    Am i reading it wrong?

    Could have resistor gotten "burned" and changed the colors?

    With a resistor that high why even have one in the circuit. YOu cant find a resistor with that high a value on digikey.

    Can anyone help?
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    • Toasty
      Badcaps Legend
      • Jul 2007
      • 4171
      #2
      Re: Shorted resistor replacement

      Shorted resistor? No. Resistors go up in value.

      I'm guessing your reading 0.2Ω and thinking shorted. It's likely a 0.2Ω resistor and the silver band looks white. Red(2) - Black(0) - Silver(x.01) - Gold(5%)

      That also looks to be a carbon resistor, which is a no-no in modern electronics. Fire hazard. If that were truly burned-up, it would show it.

      Toast
      veritas odium parit

        Comment

        • Welchs101
          Badcaps Veteran
          • Sep 2008
          • 979
          • USA
          #3
          Re: Shorted resistor replacement

          Your correct. The resistor does measure 0.2ohm.

          But from the picture the "white" band sure does look white.......doesnt it?

          Thanks. What you have said makes sense. Guess i keep looking for something else to be the problem.

            Comment

            • Harvey
              Badcaps Veteran
              • Apr 2007
              • 264
              #4
              Re: Shorted resistor replacement

              Could be a choke, the colour codes seems the wrong way for a resistor..

                Comment

                • Agent24
                  I see dead caps
                  • Oct 2007
                  • 4913
                  • New Zealand
                  #5
                  Re: Shorted resistor replacement

                  That looks like a really old style resistor, especially for an LCD.

                  Is the board marked with anything underneath to suggest if it's a resistor or choke?
                  "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                  -David VanHorn

                    Comment

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