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    dead acer e5-411

    need help from the experts, I'm fixing a laptop Acer e5-411 mobo is da0zqmmb6f0 rev:f that is dead. anyone out there has an schematic diagram,that would be a big help thanks

    #2
    Re: dead acer e5-411

    first check main power line,than look for 3,3 and 5v, and try to flash bios...

    *****************

    not sure if it is correct dump but you can try...
    or post old bios dump so we can fix it...
    Last edited by SMDFlea; 10-12-2022, 10:42 AM. Reason: dead link removed

    Comment


      #3
      Re: dead acer e5-411

      its hard to determine where is the problem because I have no reference, can someone provide me a schematic diagram of it, thanks

      Comment


        #4
        Re: dead acer e5-411

        I think its not bios because i cant even switch on the laptop so i think this might be a power problem

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          #5
          Re: dead acer e5-411

          Originally posted by mangtomas View Post
          I think its not bios because i cant even switch on the laptop so i think this might be a power problem
          dude BIOS makes the notebook dead. EVEN charging LED.

          now check every component and coils for short to GROUND.

          Inject voltage there if you find any. check and see if it gets hot.

          If you find that HM Chipset gets hot , your done BGA work required.

          start with bios and check with oscilloscope
          Just cook it! It's already broken.

          Comment


            #6
            Re: dead acer e5-411

            Originally posted by dj_ricoh View Post
            dude BIOS makes the notebook dead. EVEN charging LED.

            now check every component and coils for short to GROUND.

            Inject voltage there if you find any. check and see if it gets hot.

            If you find that HM Chipset gets hot , your done BGA work required.

            start with bios and check with oscilloscope
            true...
            first search sieguntur repair on youtube videos for better understanding of mobo architecture then you can start repairing

            Comment


              #7
              Re: dead acer e5-411

              I think this is not a bios problem because there is no 19v in PQ26 which is n-channel power mosfet, there should be 19v in there I think but I only got 1.3v. If I don't have 19v in mosfet of 3valw and 5valw it will not generate 5valw and 3valw and 3valw is the supply voltage of bios for it to function so that's why I think its not a bios problem.

              Comment


                #8
                Re: dead acer e5-411

                More Info:
                E5-411 Have bios chips low voltage just 1.8v, see datasheet winbond 25q64fws1g

                Comment


                  #9
                  Re: dead acer e5-411

                  Originally posted by meritosari View Post
                  More Info:
                  E5-411 Have bios chips low voltage just 1.8v, see datasheet winbond 25q64fws1g
                  agree with you meritosari, and most of them are (OTP)
                  see picture
                  Attached Files

                  Comment


                    #10
                    Re: dead acer e5-411

                    HI.. Good Day. Anyone have schematic for this DA0ZQMMB6E0 Rev:E
                    have some burned capacitor in 19v line. need to check value and to trace other problem in affected area. thank you..

                    Comment


                      #11
                      Re: Da0zqmmb6e0 rev:e

                      HERE is the picture of what i need. but if theres an schematic please..
                      Attached Files

                      Comment


                        #12
                        Re: Da0zqmmb6e0 rev:e

                        which laptop? brand and model

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                          #13
                          Re: Da0zqmmb6e0 rev:e

                          shorted 19v line. i traced that PC 112 is shorted. i need to now exact value of that caps..
                          thank you,

                          Comment


                            #14
                            Re: Da0zqmmb6e0 rev:e

                            Use Quanta ZHK as refer :http://www.s-manuals.com/motherboard/quanta_zhk

                            the caps value are:
                            - 0.1U/25V_4 (0402)
                            - 2200P/50V_4 (0402)

                            How could be?

                            Quanta ZHK and ZQM using same IC NB671L

                            you'll find it at your donor board.
                            Last edited by meritosari; 09-22-2016, 01:03 AM.

                            Comment


                              #15
                              Re: Da0zqmmb6e0 rev:e

                              does capacitors ,. are not so needed o does part of the circuit , machine can live without them !!!

                              schematic and boardview
                              Attached Files

                              Comment


                                #16
                                Re: Da0zqmmb6e0 rev:e

                                Thank you very much.. appreciated..
                                Laptop is fixed now.. thank you guys..

                                Comment


                                  #17
                                  Re: Da0zqmmb6e0 rev:e

                                  i already remove that so i confirmed PU6 is already shorted,
                                  got lucky i have spare of that NB671LGQ Z NB671L AJPE.
                                  thanks to all.

                                  Comment


                                    #18
                                    E5-411 schematic

                                    hi guys i need schematic diagram for my acer e5-411..thanks

                                    Comment


                                      #19
                                      Re: dead acer e5-411

                                      Schematic please

                                      Comment


                                        #20
                                        Re: Da0zqmmb6e0 rev:e

                                        Originally posted by highpulse View Post
                                        does capacitors ,. are not so needed o does part of the circuit , machine can live without them !!!

                                        schematic and boardview
                                        Thanks

                                        Comment

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