msi netbook u135dx battery not charging

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  • String2016
    Badcaps Legend
    • Nov 2015
    • 2229
    • philippines

    #1

    msi netbook u135dx battery not charging

    Hi everyone I need help on this netbook msi u135dx the problem is battery stuck on 30% and it shows charging but only 30% and also cannot turn on on battery but works fine with charger. anyone please help
  • meritosari
    Senior Member
    • Oct 2010
    • 774
    • Indonesia

    #2
    Re: msi netbook u135dx battery not charging

    Symptom like the First mosfet after DC jack have shorted ( Drain to Source), so power source from the adapter didn't verified and charger IC didn't working properly.

    Comment

    • String2016
      Badcaps Legend
      • Nov 2015
      • 2229
      • philippines

      #3
      Re: msi netbook u135dx battery not charging

      There is a mosfet after the dc in mosfet is AO4932 here is the reading charger only pin 1=19v pin 2=19v pin3=ov pin4=ov pin 5 to 8=0v but battery only inserted all pins have ov but battery and charger inserted pin1 and 2 =19v pin3 and 4 0v pin 5 to 8=12v. Also baterry and charger inserted only pin 3 have resistance.any advise please help
      Attached Files

      Comment

      • String2016
        Badcaps Legend
        • Nov 2015
        • 2229
        • philippines

        #4
        Re: msi netbook u135dx battery not charging

        Anyone please help

        Comment

        • meritosari
          Senior Member
          • Oct 2010
          • 774
          • Indonesia

          #5
          Re: msi netbook u135dx battery not charging

          Do you have the schematic?
          I think this is MSI wind U100

          Try open the black tape near DC jack, there should be FET Q40 AO4413
          Measure it in diode mode or ohm mode ( Don't apply power when you measure it in diode mode or ohm mode)

          Link HD image:https://drive.google.com/folderview?...2s&usp=sharing
          Attached Files
          Last edited by meritosari; 04-25-2017, 09:38 PM.

          Comment

          • String2016
            Badcaps Legend
            • Nov 2015
            • 2229
            • philippines

            #6
            Re: msi netbook u135dx battery not charging

            Thank you for the response i dont have schematic for this I checked mosfet AO4413 behind dc in its PQ9 and put multimeter to 200 ohms here is the reading pin 1 to 3 = 41.2 ohms pin 4=102.9ohms and pin 5 to 8 have 24 ohms.any advise and help please

            Comment

            • String2016
              Badcaps Legend
              • Nov 2015
              • 2229
              • philippines

              #7
              Re: msi netbook u135dx battery not charging

              Anyone please help

              Comment

              • String2016
                Badcaps Legend
                • Nov 2015
                • 2229
                • philippines

                #8
                Re: msi netbook u135dx battery not charging

                anyone please help

                Comment

                • String2016
                  Badcaps Legend
                  • Nov 2015
                  • 2229
                  • philippines

                  #9
                  Re: msi netbook u135dx battery not charging

                  Anyone please help still cannor figured out this problem

                  Comment

                  • String2016
                    Badcaps Legend
                    • Nov 2015
                    • 2229
                    • philippines

                    #10
                    Re: msi netbook u135dx battery not charging

                    Anyone please help on this please

                    Comment

                    • mielta
                      Badcaps Veteran
                      • Apr 2015
                      • 368
                      • Germany

                      #11
                      Re: msi netbook u135dx battery not charging

                      Hi
                      I think here is the schematic
                      The password for the pdf is ERC

                      i hope it helps
                      Attached Files

                      Comment

                      • String2016
                        Badcaps Legend
                        • Nov 2015
                        • 2229
                        • philippines

                        #12
                        Re: msi netbook u135dx battery not charging

                        thanks for the schematics ill check pq9 above post #9 is the reading anyone please help me what could it be the problem cannot turn on battery but works fine on charger battery charging but stuck on 30percent can anyone help me on this please

                        Comment

                        • meritosari
                          Senior Member
                          • Oct 2010
                          • 774
                          • Indonesia

                          #13
                          Re: msi netbook u135dx battery not charging

                          https://www.badcaps.net/forum/showpo...4&postcount=19

                          Comment

                          • String2016
                            Badcaps Legend
                            • Nov 2015
                            • 2229
                            • philippines

                            #14
                            Re: msi netbook u135dx battery not charging

                            thanks for the response guys i measured again the mosfet AO4413 multimeter set to 200ohms

                            pin1 S1 black probe to pin 4 G1 red probe = 199.5 ohms
                            pin1 S1 black probe to pin5 D1 red probe = reading flashing
                            pin 4 G1 black probe to pin 5 D1 red probe = 193.6 ohms
                            pin 2 S2 black probe to pin 4 G1 red probe = 197 ohms
                            pin 2 S2 black probe to pin 5 D1 red probe = reading flashing
                            pin 4 G1 black probe to pin 6 D2 red probe = 190.3 ohms
                            pin 3 S3 black probe to pin 4 G1 red probe = 196.6 ohms
                            pin 3 S3 black probe to pin 5 D1 red probe = reading flashing
                            pin 4 G1 black probe to pin 7 D3 red probe = 188.6 ohms
                            pin 4 G1 black probe to pin 8 D4 red probe = 193.5 ohms

                            in seems that there is short on drain to source for the mosfet
                            and also notice 1 ceramip caps at back on dc have no resistance because ohms I Have attached the image. please anyone help on this please
                            Attached Files

                            Comment

                            • String2016
                              Badcaps Legend
                              • Nov 2015
                              • 2229
                              • philippines

                              #15
                              Re: msi netbook u135dx battery not charging

                              anyone please help

                              Comment

                              • String2016
                                Badcaps Legend
                                • Nov 2015
                                • 2229
                                • philippines

                                #16
                                Re: msi netbook u135dx battery not charging

                                any advise and help on this please

                                Comment

                                • String2016
                                  Badcaps Legend
                                  • Nov 2015
                                  • 2229
                                  • philippines

                                  #17
                                  Re: msi netbook u135dx battery not charging

                                  any help on this please ill tried to change the mosfet AO4413 but i don't have the spare can anyone advise what compatible with this please

                                  Comment

                                  • mielta
                                    Badcaps Veteran
                                    • Apr 2015
                                    • 368
                                    • Germany

                                    #18
                                    Re: msi netbook u135dx battery not charging

                                    Hi
                                    You must look at side 21 there is Power select.
                                    check the voltage within battery

                                    Comment

                                    • String2016
                                      Badcaps Legend
                                      • Nov 2015
                                      • 2229
                                      • philippines

                                      #19
                                      Re: msi netbook u135dx battery not charging

                                      thank for the response mielta what do you mean side 21?

                                      Comment

                                      • mielta
                                        Badcaps Veteran
                                        • Apr 2015
                                        • 368
                                        • Germany

                                        #20
                                        Re: msi netbook u135dx battery not charging

                                        Hi
                                        I mean in the schematic at 21

                                        Comment

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