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Element ELCHW402 resistor question

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    Element ELCHW402 resistor question

    I was doing some testing of components on the power supply board in this tv and came across 2 resistors that appear to have over heated ..

    They are marked 3W0R15K..

    Does anyone know the value of these ?

    Wondering if they are 15 ohm or 15K ohm?

    Wondering since they measure 0.2 ohms
    Attached Files

    #2
    Re: Element ELCHW402 resistor question

    http://www.electronicspoint.com/thre...gs-value.5284/

    Comment


      #3
      Re: Element ELCHW402 resistor question

      Ceramic resistors 3 watts, 0.15 ohms
      Willing to help but I'm no expert.

      Comment


        #4
        Re: Element ELCHW402 resistor question

        Ok replaced the resistors and blue poly cap ..

        Power supply board is working correctly ..

        Tv still won't power up ..

        If I jump the 5 volts to the standby pin all voltages are correct so the main board has problems ..

        Anyone know if any common problems with the main board ?

        Also can the main boards be repaired or once they stop working the only option is to replace them ?

        Comment


          #5
          Re: Element ELCHW402 resistor question

          Can you list the voltages read when in standby out of standby and the pin names
          Willing to help but I'm no expert.

          Comment


            #6
            Re: Element ELCHW402 resistor question

            In standby without jumping 5vopts to pin 3 stb

            Gnd: 0.00
            Gnd: 0.00
            Stb: 0.01
            5v_s: 4.77
            5v_s: 4.77
            12v:0.00
            12v:0.00
            Gnd:0.00
            BR 1:0.00
            SW: 0.00
            Gnd:0.00
            Gnd :0.00
            5vm: 0.00
            5vm: 0.00

            Not in standby when I jump 5v_s to stb

            Gnd:0.00
            Gnd:0.00
            Stb:4.93
            5v_s:4.93
            5v_s: 4.93
            12v: 11.71
            12v: 11.71
            Gnd:0.00
            Br 1: 2.87
            Sw :0.02
            Gnd:0.00
            Gnd:0.00
            5v m :5.24
            5v m: 5.24

            Comment


              #7
              Re: Element ELCHW402 resistor question

              Sorry about this but as above but with the power supply connected to the main board without using the resistor to jumper the supply.
              The only pin I'm unsure of is what SW is for.
              Willing to help but I'm no expert.

              Comment


                #8
                Re: Element ELCHW402 resistor question

                Sw = bl-on.
                Br = dim
                STB = PSON

                5v_s: 4.77. 5VSTBY is on the low side.
                Last edited by budm; 09-28-2016, 10:35 PM.
                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

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