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LG 55LW5600 No Video No Sound

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    #41
    Re: LG 55LW5600 No Video No Sound

    List the panel number of the tv and we'll see what we can figure out.

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      #42
      Re: LG 55LW5600 No Video No Sound

      Tv model is 47LW5700
      LA12C is assembly number
      main board EAX64344102(1)

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        #43
        Re: LG 55LW5600 No Video No Sound

        Panel number should be on the back metal chassis on a sticker.

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          #44
          Re: LG 55LW5600 No Video No Sound

          I see. I will look when I get home. None of my pictures cought that detail.
          I have been reading service and training manuals, but could not figure out how to determine if backlite diodes are fine if there is no mainboard 3.3V to supply TCON board and other controls. Unless it is this 220ohm to ground test. In that case, should I disconnect cables between main and TCON board (LVDS/power)?

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            #45
            Re: LG 55LW5600 No Video No Sound

            Here is the panel number LC470EUF (SD) (F2)

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              #46
              Re: LG 55LW5600 No Video No Sound

              This appears to be a good list of substitute mainboards for your 47 LW5700, might need to put LG in front of them if searching:

              EBR73360903
              EBR74261202
              EBR74261207
              EBT61409804
              EBT61410005
              EBT61804804
              EBT61804905
              EBT61804907
              EBT61804912
              EBT61804913
              Last edited by nomoresonys; 10-29-2020, 11:56 PM.

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                #47
                Re: LG 55LW5600 No Video No Sound

                Your best bet might be one of the repair services, I would try to get one that has a good rep. and offers at least a 6 month guarantee: https://www.ebay.com/sch/i.html?_fro...10008&_sacat=0

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                  #48
                  Re: LG 55LW5600 No Video No Sound

                  I will contact repair shops and send my board out. I will verify that panel LEDS are fine first and then do that. Thank you for the help and your time. Cheers

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                    #49
                    Re: LG 55LW5600 No Video No Sound

                    Just had a TV come in exactly as stated above No backlight, button turns from red to white stays white nothing showing on picture. Main board needed to be reheated. LG 55LW5600

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