Thinkpad Carbon X1, LMQ-1 MB 12298-2 Black screen

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  • pratyush
    Senior Member
    • Sep 2018
    • 69
    • India

    #1

    Thinkpad Carbon X1, LMQ-1 MB 12298-2 Black screen

    I have 2 thinkpad carbon x1..
    Problem I am facing with these 2 are listing below..
    1st
    Mobo is getting on And there will be light on keyboard..
    In diagnosis got 2 burned fuse in lvds section F3(for3.3v) and F7(for19v) changed it bt condition remains same
    And F3 burned out again...then i use jumper wire

    bt condition remains same.

    2nd
    Mobo is getting on nothing on screen, Not presense of light on keyboard.
    Lvds section seems to be ok

    Voltages on coils in both case L3 L4 L5 L7 and L28 are okk

    Unfortunately don't have exact schematic so facing prob in diagnosis..


    for LVDS section i used schematic of thinkpad t430 which i found same
    any suggestion plz...
    Attached Files
    Last edited by pratyush; 12-04-2018, 05:25 AM.
  • ktmmotocross
    Boardkiller
    • Feb 2014
    • 3578
    • slovakia

    #2
    Re: Thinkpad Carbon X1, LMQ-1 MB 12298-2 Black screen

    if u burning fuses, than u must have short

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