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Help for dv5-1030EL

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    #1

    Help for dv5-1030EL

    I have a hp laptop, mainboard 31qt6mb0090, right now the laptop does not power on. When the original psu is connected there is no light near the jack. I have 3.3v on power button that drops to zero when pressed.

    Rsmrst signal is always 0.
    Alw voltages are present (3,5 and 12)

    On the u22 (bios flash) i have
    1 0.1v
    2 1.6v
    3 3.3v
    4. 0 v
    5. 0.2v
    6. 1.4v
    7. 3.3v
    8. 3.3v

    s5_ong 9.4v
    s5_on 0v

    are there other voltages i have to check? thanks
    Tags: None
    #2
    Re: Help for dv5-1030EL

    Post the schematic , if not what's the model number of your motherboard .

    always start by the begining : First and second mosfet = Drain ;source and gate

    Comment

      #3
      Re: Help for dv5-1030EL

      Thx for the answer. Btw 19v rail works great, i have
      +3V_ALW/+5V_ALW/+5V_ALW2 /+12V_ALW

      But rsmrst is low.. it should came out from the SIO as an high signal in order to power on the unit.

      The model number is in the first post.
      Attached Files

      Comment

        #4
        Re: Help for dv5-1030EL

        RSMRST# is missing. So either a signal prior to it in the power sequence is missing, or there is an issue with the EC itself.
        Issue with the EC can be that it's damaged or the firmware is corrupted

        If we work backwards from the RSMRST# step, we can see if there is anything else missing.

        So try by take the IO basic requirements : VCC ,AVCC and ECRST

        Pin 64/ 19

        Comment

          #5
          Re: Help for dv5-1030EL

          Make sure you use known good HP adapter of correct power rating and try to flash the BIOS.
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

          Comment

            #6
            Re: Help for dv5-1030EL

            Originally posted by piernov View Post
            Make sure you use known good HP adapter of correct power rating and try to flash the BIOS.
            yep ok . i will try to flash the bios. can i use buspirate ? never flashed a bios.
            where can i download the bios?

            Comment

              #7
              Re: Help for dv5-1030EL

              Originally posted by lapfix View Post
              RSMRST# is missing. So either a signal prior to it in the power sequence is missing, or there is an issue with the EC itself.
              Issue with the EC can be that it's damaged or the firmware is corrupted

              If we work backwards from the RSMRST# step, we can see if there is anything else missing.

              So try by take the IO basic requirements : VCC ,AVCC and ECRST

              Pin 64/ 19
              avcc = 3.3v
              vcc = 3.3v
              ecrst = 3920_rst# = 3.3v
              adtype = pin 64 = 1.5v
              NBSWON1# = pin 19 = 3.3v goes to 0 when power btn pressed. then comes back to 3.3v when released

              Comment

                #8
                Re: Help for dv5-1030EL

                i flashed a new bios. now rmsrst is always low but when i press the power the power led goes on for 1 second and the rsmrst goes to 3.3v then the led and the rsmrst signal goes off .

                Maybe a bad bios?

                Comment

                  #9
                  Re: Help for dv5-1030EL

                  Originally posted by Dowhile View Post
                  i flashed a new bios. now rmsrst is always low but when i press the power the power led goes on for 1 second and the rsmrst goes to 3.3v then the led and the rsmrst signal goes off .

                  Maybe a bad bios?
                  Post your old dump at the appropriate section, someone gonna help you

                  Comment

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