Hp 4520s Not powering up white led blinking

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  • markopolo
    Member
    • Mar 2014
    • 27
    • Slovenia
    #1

    Hp 4520s Not powering up white led blinking

    Hi everyone!

    I have a problem the HP 4520s that is not powering up.
    I have measured the regulator voltages and they are ok 3,3V and 5V
    Then I have checked the charging chip and everything was ok except the acdetec there should be at least 2.7 V for the chip to detect the main power but there is 0. Then I have checked the resistors capacitors and transistors where the acdetect comes from and all seems to be ok.
    If someone had this problem any suggestion would be apreciated.

    The Main board is H9265-1
    Tags: None
    • Ramee
      Badcaps Veteran
      • Jul 2014
      • 218
      • Israel
      #2
      Re: Hp 4520s Not powering up white led blinking

      Flash it

        Comment

        • smali
          Badcaps Veteran
          • Sep 2014
          • 287
          • Pakistan
          #3
          Re: Hp 4520s Not powering up white led blinking

          check the adopter watts may be low and battery may be fully discharge.

            Comment

            • claudyu07
              Claudyu07
              • May 2014
              • 125
              • Ireland
              #4
              Re: Hp 4520s Not powering up white led blinking

              How many times it's flashing?
              Hp have error codes
              Check this : http://h20564.www2.hp.com/hpsc/doc/p...rComputerBeeps

                Comment

                • masud
                  Badcaps Veteran
                  • Jul 2011
                  • 317
                  • Bangladesh
                  #5
                  Re: Hp 4520s Not powering up white led blinking

                  press and hold the power button without battery and charger for 10 seconds and then try.

                    Comment

                    • mesersmith
                      Member
                      • Dec 2014
                      • 35
                      • România
                      #6
                      Re: Hp 4520s Not powering up white led blinking

                      Do you have the original HP charger?

                        Comment

                        • markopolo
                          Member
                          • Mar 2014
                          • 27
                          • Slovenia
                          #7
                          Re: Hp 4520s Not powering up white led blinking

                          Yes I have tried all the suggestions but nothing helped. Except for flashing I didn't flash it yet. Does anybody have a bios dump? And it is flashing instantly.

                            Comment

                            • gcomputers
                              Badcaps Veteran
                              • Apr 2013
                              • 509
                              • Albania
                              #8
                              Re: Hp 4520s Not powering up white led blinking

                              try this, but maybe ati chip problem???
                              Attached Files
                              Last edited by gcomputers; 06-18-2015, 02:10 PM.

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