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Lenovo yoga 330 powers on no image

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    Lenovo yoga 330 powers on no image

    Hello,

    I have a Lenovo 330 (Yoga 330-11IGM Laptop (ideapad),Yoga 330-11IGM, Flex 6-11IGM) wich powers on but no image and only consumes 1 watt at the 230v adapter. It does charge the battery with or without ac no diffrent.
    YOGA330+MB_V06


    I measured the coils:

    U6002 > 3,3v 2,4k ohm
    U6001 > 5,2v 300k (and less) ohm
    U5901 > 12,9v 114 ohm
    U6102 > 0v 19 ohm
    U6104 > 1v 77 ohm
    U6103 > 1v 27 ohm
    U6105 > 1,2V 222 ohm

    at U6102 is a mosfet apw8707 located, I attach image.
    I do not have schema, what would the best steps to take so the possible issue can be found/fixed.
    No optical / water damage

    thx
    Attached Files
    Last edited by Jeroentje; 09-25-2021, 09:01 AM. Reason: add pdf

    #2
    Re: Lenovo yoga 330 powers on no image

    I found some more schematic info, does anyone know what should be present at 27 ?
    And what (flexiable) voltage should be present on LX ?
    Attached Files

    Comment


      #3
      Re: Lenovo yoga 330 powers on no image

      any one ?

      Comment


        #4
        Re: Lenovo yoga 330 powers on no image

        If this ic is used in vcore circuit, then close to 1V is expected on BOOT pin.

        Comment


          #5
          Re: Lenovo yoga 330 powers on no image

          Here is the schematics! Should make life easier!
          Attached Files

          Comment


            #6
            Re: Lenovo yoga 330 powers on no image

            thx mate !

            Comment


              #7
              Re: Lenovo yoga 330 powers on no image

              teşekkürler

              Comment


                #8
                Re: Lenovo yoga 330 powers on no image

                thanks master

                Comment


                  #9
                  Re: Lenovo yoga 330 powers on no image

                  did u flash bios?

                  Comment

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