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LG 43UK6470PLC - no image

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    #1

    LG 43UK6470PLC - no image

    Hi All,

    I have a 43UK6470PLC that was showing no picture at all.

    I got a replacement Mainboard + T-Con (combined unit) – part number EAX67872805 - as it was cheap and was hoping for a quick win. Unfortunately, no luck with that.

    So, looks like an LCD issue. If I:
    • remove the Left had side LCD driver cable – No Picture
    • remove the Right had side LCD driver cable – No Picture
    • tape over Pins 3-12 Left hand side LCD driver cable – Picture with some blank lines and flickering on the left-hand side.


    I'm trying to figure out exactly what pin I need to isolate but having difficultly as I think it could be more than one pin on both sides.

    Anyone have a schematic or know the pinouts for the LCD on EAX67872805? Or any other tips to help isolate what one it is?

    Many Thanks. Jas
    Tags: None
    #2
    Re: LG 43UK6470PLC - no image

    Just an update.

    Got it working by covering pin 1-6 with scotch tape.

    Looks like this TV used the same mainboard and similar issue.
    https://www.badcaps.net/forum/showthread.php?t=82783

    Hope this helps someone.

    Comment

      #3
      Re: LG 43UK6470PLC - no image

      Odd that one side did not come back when removing cable.
      I assume no responsibility for any stupid suggestions I might post.

      Comment

        #4
        Re: LG 43UK6470PLC - no image

        Originally posted by dskall View Post
        Odd that one side did not come back when removing cable.
        It's true with these series.
        The only noticeable difference between sides is that power supply shuts down when bad side is connected.

        Comment

          #5
          Re: LG 43UK6470PLC - no image

          i have the same exact issue on the same model.
          by covering pins 3 and 12 the TV works but with some flickering one the upper left corner

          Comment

            #6
            Re: LG 43UK6470PLC - no image

            same tv, maybe try blocking same pins as pi3141592 did in post #2, might not work but worth a shot.

            Comment

              #7
              Hi All,

              Can someone please upload the bios fie for this TV / MAIN BOARD ?

              LG 43UK6300PLB MAIN EAX67872805(1.1) DUMP BIN BIOS EEPROM 32KB

              I have a TV here from a client thar has all voltages and the Pilot red light but cant turn on neather with the remote control.

              Thank you

              Comment

                #8
                Originally posted by note_fritz View Post
                Hi All,

                Can someone please upload the bios fie for this TV / MAIN BOARD ?

                LG 43UK6300PLB MAIN EAX67872805(1.1) DUMP BIN BIOS EEPROM 32KB

                I have a TV here from a client thar has all voltages and the Pilot red light but cant turn on neather with the remote control.

                Thank you
                LG 43UK6740PLA EAX67872805(1.1)

                Attached Files

                Comment

                • note_fritz
                  #8.1
                  note_fritz commented
                  12-06-2023, 06:31 AM
                  Editing a comment
                  Hi Lotas.

                  Thank you very much
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