Lg 42la640s

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  • asliyucegsm
    Badcaps Veteran
    • Jun 2011
    • 340
    • Turkiye

    #1

    Lg 42la640s

    my friend
    LG 42LA640S:
    main: LD33B/LC33B/LE33B EAX64797003(1.2) EBR76405101
    EAX64908001(1.9) LGP3942-13P
    6870C-0444A LC470DUE-SFR1
    schema
    supply is not working properly 24 volts does not come
    24c256 dump and schema
    thanks
  • asliyucegsm
    Badcaps Veteran
    • Jun 2011
    • 340
    • Turkiye

    #2
    Re: Lg 42la640s

    mainboard picture help
    Attached Files

    Comment

    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6642
      • Wales

      #3
      Re: Lg 42la640s

      Do you have the 3.5V and 12V and what voltage do you have on D251 and D255
      Willing to help but I'm no expert.

      Comment

      • asliyucegsm
        Badcaps Veteran
        • Jun 2011
        • 340
        • Turkiye

        #4
        Re: Lg 42la640s

        my friend
        3.5 volt yes
        12Volts and 24Volts shut down in 8 seconds

        Comment

        • dick_barton
          Badcaps Legend
          • Aug 2015
          • 6642
          • Wales

          #5
          Re: Lg 42la640s

          Disconnect the mainboard from the power supply and on the power supply connect 3.5V to PWR_ON using a 1K ohm resistor and then check you have 12V and 24V
          Willing to help but I'm no expert.

          Comment

          Working...