TVE LED3212DVDDVBT LED TV No backlight

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  • anno
    Senior Member
    • Sep 2007
    • 140
    • netherlands
    #1

    TVE LED3212DVDDVBT LED TV No backlight

    hi.

    i replaced a diode on mainboard because it doesn`t turned on. Now tv is turning on (green led), but no backlight. on the power supply i have 24 volt on LED+ and LED1 test points.

    there are 2 pairs of wires (2 x red/black) to the panel.

    on mainboard there is a connector labeled 'inverter' , the reading are:

    GND 0
    GND 0
    ADJ 4.5
    BLO 0
    12v 12
    12v 12

    BLO = backlight on? it's 0v so that is not good?

    anyone can help.
    Tags: None
    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain
      #2
      Re: TVE LED3212DVDDVBT LED TV No backlight

      BLO is the backlight on you should be seeing around 3.3v on that. What mainboard is it ?
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • anno
          Senior Member
          • Sep 2007
          • 140
          • netherlands
          #3
          Re: TVE LED3212DVDDVBT LED TV No backlight

          hi
          it is T.MSD306.9A

          i looked carefully on the board and saw a commonent was loose because i used hotair to remove a diode. i think i used to high airflow.
          it is connected to u3 that is aic2857f a voltage regulator.

          5v goes in and 1.3v goes out. is this output voltage is correct? it looks it goes to the processor.

            Comment

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