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HP 15-p251nv DAY23AMB6F0 (Quanta Y23A) BIOS

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    HP 15-p251nv DAY23AMB6F0 (Quanta Y23A) BIOS

    The laptop came to me after a good bath of coffee.
    I make a good cleaning with isopropyl and flux off spray and then inspection with no sign of damage. Power on MB with 0,77A consumption. Fan is spinning, CPU, GPU warmed up but i can't say the same for FCH and nothing on screen.
    I make some measurements.
    Voltage is Before PWRBTN/After PWRBTN
    PL11: 167k 3V/3V
    PL12: 173K 0V/0,959V
    PL17: 12,3Ω 0V/0,995V
    PL14: 64,6Ω 0V/1.371V
    PL16: 9.7Ω 0V/1.098V
    PL18:9.7Ω 0V/1.098V
    PL21:27.3Ω 0V/1V
    PL22: 69.6Ω 0V/1.199V
    PL26:0.486K 0V/1.396V
    PL24: 203.3Ω 0V/1.136V
    PL25: 9K 0V/5V
    PL29: 16.6K 0V/3.377V
    I can't find the schematic but i think i have all the voltages.
    Any help?

    #2
    Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

    try to flash bios.

    Comment


      #3
      Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

      I'm looking around for bios file but no luck

      Comment


        #4
        Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

        Here
        Attached Files

        Comment


          #5
          Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

          Thanks for the file but nothing changed.
          Any other solution?

          Comment


            #6
            Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

            What kbc you got?
            Just cook it! It's already broken.

            Comment


              #7
              Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

              Kb9028q c

              Comment


                #8
                Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                Here another bios:
                HP 15-p030nr
                DAY23AMB6F0 REV.F (Quanta Y23A)
                BID022C3 F.29

                The bios not resolve my problem i try to find datasheet for KB9028Q_C
                Attached Files
                Last edited by toni31; 02-15-2016, 12:12 PM.

                Comment


                  #9
                  Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                  Can anyone tell me if the KB 9028 is programmable

                  Comment


                    #10
                    Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                    if you ask me i think it is programmable because kb901X is programmable and has a size of 128kb and it is the series of kb902X and i think this one will be size of 256kb its just my assumption but your laptop is ON than i think it is not kbc problem so first go for reflowing the FCH
                    wish you all the best.

                    Comment


                      #11
                      Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                      after decrypted file from official hp web site, there are 3 files, i don't know what you need.
                      2x 4.096kb and 1x8.192kb

                      make sure your programmer already supporting for new bios chip that has low voltage 1.8v (my opinion)
                      Attached Files

                      Comment


                        #12
                        Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                        Thanks
                        but i think it's 3.3V
                        Take a look here
                        http://www.elnec.com/en/device/GigaD...5BSOP8-200%5D/

                        Comment


                          #13
                          Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                          Thankyou

                          Comment


                            #14
                            Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                            Originally posted by pragmatiko View Post
                            here
                            thanx its working for me.

                            Comment


                              #15
                              Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                              tony 3.3 and 5 volts will be present on S3 only , meaning that 3.3 and 5 volts will appear on the coils after machine start . chek main vcc lines for KBC as also chek voltage present on powerbutton and bios . i got a machine that wont start up , it does charge , it turn on and off like 1 milisecond (once i press on off ) cheking local stuff no shorts found , thinking in possiblew SIO problem , but without pdf do make extra tests it becomes a bit try it or fuck it .
                              indeed all KB901X series are programable , major is 128k , but allready had some with 64kb or 256kb , in case you need EC files let me know , also for programing you need to use keyboard socket to wire to your programmer in order to programme SIO

                              Comment


                                #16
                                Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                                ec dump, donwload from external site...for test
                                regards
                                Attached Files

                                Comment


                                  #17
                                  Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                                  hi friends... I have the same problem, with same values of PL... can you help me?? Please?

                                  Comment


                                    #18
                                    Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                                    Originally posted by toni31 View Post
                                    Here another bios:
                                    HP 15-p030nr
                                    DAY23AMB6F0 REV.F (Quanta Y23A)
                                    BID022C3 F.29

                                    The bios not resolve my problem i try to find datasheet for KB9028Q_C
                                    with this dump the laptop started up, thanks.

                                    Comment


                                      #19
                                      Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A)

                                      try this working 100 %
                                      Attached Files

                                      Comment


                                        #20
                                        Re: HP 15-p251nv DAY23AMB6F0 (Quanta Y23A) BIOS

                                        thanks you!

                                        Comment

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