asus x55A no power

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  • bicalov
    Badcaps Veteran
    • Nov 2014
    • 294
    • Netherlands

    #21
    Re: asus x55A no power

    Originally posted by ktmmotocross
    Hello.
    Have this asus X55A and i have 19V before the first power mosfet and 0.89V after the mosfet.

    i cannot find schematic so any help would be needed
    Can this help? I hope the A and the S don't make that much difference.
    Last edited by bicalov; 06-30-2015, 02:50 PM. Reason: did not look good, sorry

    Comment

    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3578
      • slovakia

      #22
      Re: asus x55A no power

      maybe u forgot to attach something

      Comment

      • atsio
        Badcaps Veteran
        • Oct 2013
        • 819
        • Greece

        #23
        Re: asus x55A no power

        Originally posted by ktmmotocross
        Hello.
        Have this asus X55A and i have 19V before the first power mosfet and 0.89V after the mosfet.

        i cannot find schematic so any help would be needed
        If you have 0,89 volt usually it is not a problem of BQ25. It's a problematic fet.

        Comment

        • bicalov
          Badcaps Veteran
          • Nov 2014
          • 294
          • Netherlands

          #24
          Re: asus x55A no power

          Originally posted by ktmmotocross
          maybe u forgot to attach something
          I thought I had found a good one but that was posted earlier already.

          Comment

          • bicalov
            Badcaps Veteran
            • Nov 2014
            • 294
            • Netherlands

            #25
            Re: asus x55A no power

            found something, you never know until you try.
            Attached Files

            Comment

            • toske666
              New Member
              • Feb 2016
              • 1
              • Serbia

              #26
              Re: asus x55A no power

              Greetings to the forum,I have a problem with my laptop Asusx55a?The problem is laptop does work in the charger,only work on battery,and when the battery is charged with the other laptop, when i put in my laptop and turn on the laptop,discharges battery and should be to recharging the battery ?means works until the battery in use,when is empty battery laptop not working or want to charge???? Please Help Meeeeee :-) Regards

              Comment

              • katzbo035
                New Member
                • May 2016
                • 1
                • Serbia

                #27
                Re: asus x55A no power

                Problem is solved. You have bad "mosfet" on matherboar behind the DC input. Replace the bad mosfet and that's it. On the video is a burning mosfet, bad you have a bad mosfet.

                https://www.youtube.com/watch?v=rwIq6ZnHIR4

                Comment

                • akarta
                  Member
                  • Nov 2015
                  • 16
                  • United Kingdom

                  #28
                  Re: asus x55A no power

                  Asus X55A No power, No leds, Wont charge. Checked 5V and 3V (3V can be measured at Bios chip if you have no schematics) all voltage present. Checked CMOS battery: BOOM 0.3v. Replaced battery and laptop now works. Always check simple things first folks!

                  Comment

                  • DeniS182
                    Badcaps Veteran
                    • Jun 2014
                    • 328
                    • Slovakia

                    #29
                    Re: asus x55A no power

                    I have problem with this laptop, have someone schematic?
                    I changed charger ic, two mosfets, and I haven't voltage on first mosfet Gate.
                    Only power led blinks.
                    MB is: X55A rev 2.2

                    Comment

                    • risting
                      Member
                      • Jun 2015
                      • 32
                      • macedonia

                      #30
                      Re: AsUS x55A no power fix

                      i replace mosfet A5 GNC 100M01 with M0930M
                      and laptop again working but automatic go to bios no booting windows restart i will try to format and install new windows or motherboard again have some problem on board one mosfet CDJ0961 near to processor give me short to ground i don't know it is this correct inductor and smd capcitors on multimeter give me shorted beep



                      Attached Files
                      Last edited by risting; 06-07-2021, 10:00 AM.

                      Comment

                      • risting
                        Member
                        • Jun 2015
                        • 32
                        • macedonia

                        #31
                        Re: asus x55A no power

                        video link here; https://www.youtube.com/watch?v=UeEzg2hw8ZM

                        Comment

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