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White blinking led on DC jack. Does not start [ HP Probook 440 G1]

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    White blinking led on DC jack. Does not start [ HP Probook 440 G1]

    So I had this model on my desk which was short on 19volt. A couple of capacitors where short which was removed and now the board has 3.3 and 19v.

    Now upon plugging in the adapter I get a White blinking led on DC jack and constant white led on the power button. Nothing happens when I press the power button. I do have 3.3 volt on the power power and I also have 3.3volt on the rsmtrst signal on SIO chip.

    I have tried various Bios bin files found on the internet and all of them show the same result.

    I am short of ideas on how to proceed..

    Original Bios and Schematic attached.
    Attached Files
    Last edited by SMDFlea; 08-13-2021, 09:58 AM.

    #2
    Re: White blinking led on DC jack. Does not start [ HP Probook 440 G1]

    Did you try original HP AC adapter?

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      #3
      Re: White blinking led on DC jack. Does not start [ HP Probook 440 G1]

      Other to use originale ADP investigate the section with bad capacitor to check other issue.
      Check also the EC and pch
      Last edited by jasko_jacker; 01-24-2020, 05:26 AM.

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        #4
        Re: White blinking led on DC jack. Does not start [ HP Probook 440 G1]

        Likely to be kbc fault.

        Comment


          #5
          Re: White blinking led on DC jack. Does not start [ HP Probook 440 G1]

          Yes I have used the original adapter. What pins do we check to narrow down the problem to a particular section my friends.

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            #6
            Re: White blinking led on DC jack. Does not start [ HP Probook 440 G1]

            any solution to this
            i have an issue on my hp 440 g1 not charging battery

            Comment


              #7
              Re: White blinking led on DC jack. Does not start [ HP Probook 440 G1]

              Did you try with known good battery, 99 % of battery issues are the battery itself.
              Last edited by Stevedb; 08-13-2021, 10:13 AM.

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