LG 37LCD No sound

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  • crdz66
    Badcaps Veteran
    • Nov 2012
    • 242
    • USA
    #1

    LG 37LCD No sound

    Hello Fellas.

    I have a Lcd Tv with no sound.
    I did it couple tests
    1. I apply 1.5 v direct to each speaker and I have the pop up sound.
    2. I connect a earphones to the main board headphones jack and no sound find.
    3. I check the 4 pins connector going to speaker from mainboard and I get 0.4volts on each leg.

    Question.
    Mainboard need to be replace??

    Thanks
    Tags: None
    • crdz66
      Badcaps Veteran
      • Nov 2012
      • 242
      • USA
      #2
      Re: LG 37LCD No sound

      Upssss.
      The model number is LG 37LC7D

        Comment

        • Alastair E
          Chief Womble
          • Mar 2013
          • 1963
          • U.K.
          #3
          Re: LG 37LCD No sound

          Sound chip probably failed, but do a factory-reset see if that helps, if not--replace the MB.
          TELEFIX

          How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
          http://www.irf.com/technical-info/appnotes/an-1088.pdf
          PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

            Comment

            • crdz66
              Badcaps Veteran
              • Nov 2012
              • 242
              • USA
              #4
              Re: LG 37LCD No sound

              thanks

                Comment

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