please help identifying resistor?

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  • junkyardherbie
    New Member
    • Sep 2017
    • 7
    • USA
    #1

    please help identifying resistor?

    Idk if I posted this in the correct spot or not but I would like some help or opinion on the value of this resistor? I removed it from a Proscan 55PLED tv power supply suspecting it was bad after some troubleshooting and diagnosis. It connects between one of the FETS and the main capacitor on the hot side of the board. Resistance reading when removed from the board is 0.4 ohms. The issue I am having is that the middle band is silver, and all 5 band resistor charts show no silver as the 3rd band, grey is the only option which would make this a 27.8 ohm resistor. Based on the size of it I would guess it to be 1 or 2 watts. As the picture shows, the middle band is clearly silver. Did they just do this bc a grey band wouldn't show up on a grey background? Or am I reading it all wrong? Any help would be greatly appreciated as I am also having no luck in finding an equivalent replacement.
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    • R_J
      Badcaps Legend
      • Jun 2012
      • 9588
      • Canada
      #2
      Re: please help identifying resistor?

      The resistor is ok. it is 0.27Ω, red=2, vilolet=7, silver is the multplier X0.01 gold = 5% . It is a fusible resistor, If the fet for example shorts, it will cause the resistor to open. The reason it reads .4 Ω is partly due to your meter leads resistance
      Last edited by R_J; 06-30-2018, 11:31 AM.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: please help identifying resistor?

          Originally posted by R_J
          The resistor is ok. it is 0.27Ω, red=2, vilolet=7, silver is the multplier X0.01 gold = 5% . It is a fusible resistor, If the fet for example shorts, it will cause the resistor to open. The reason it reads .4 Ω is partly due to your meter leads resistance
          +1
          These is nothing wrong with that resistor.
          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

            • junkyardherbie
              New Member
              • Sep 2017
              • 7
              • USA
              #4
              Re: please help identifying resistor?

              Great thank you I will reinstall it on the board. Just curious as to what the green band means?

                Comment

                • R_J
                  Badcaps Legend
                  • Jun 2012
                  • 9588
                  • Canada
                  #5
                  Re: please help identifying resistor?

                  The green band is likely Temperature Coefficient ppm/k Green =20
                  Sometimes the bands don't conform to the standard IE: many low value metal film resistors have a Black first band
                  Last edited by R_J; 07-02-2018, 05:28 PM.

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