dv9000 not turning on /no leds

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  • highpulse
    i hate HP
    • May 2013
    • 1488
    • portugal

    #1

    dv9000 not turning on /no leds

    I there , received here a dv9000 that client mention computer not turning on , well is right for sure , when pressed the on off button we have the 3.3 source and drop to 0 volts and when release recome to 3.3 volts , main step controler also all good , 3.3 and 5 volts ok . battery charges but still not turning on , well i'm a bit stuck here , this has the old NB chip by intel , its a DA0AT7MB8E7 REV:E .
    any tips will be welcomme .

    best regards

    jonathan
  • sorinac
    Senior Member
    • Jul 2013
    • 123
    • Romania

    #2
    Re: dv9000 not turning on /no leds

    first write bios from hp website

    Comment

    • kruuth
      New Member
      • Mar 2014
      • 5
      • US

      #3
      Re: dv9000 not turning on /no leds

      What's the full model number and GPU? HP has had some serious issues with the graphics chip overheating and then not fully booting. I've seen them kick on but have no activity and some that will load the battery and sit dark like the way you're describing.

      Comment

      • xredhawk
        Senior Member
        • Jul 2011
        • 103

        #4
        Re: dv9000 not turning on /no leds

        Originally posted by kruuth
        What's the full model number and GPU? HP has had some serious issues with the graphics chip overheating and then not fully booting. I've seen them kick on but have no activity and some that will load the battery and sit dark like the way you're describing.
        i have the same, reball gpu

        Comment

        • highpulse
          i hate HP
          • May 2013
          • 1488
          • portugal

          #5
          Re: dv9000 not turning on /no leds

          i just receive board , but board model is the one i posted above , gpu is a gf-go7600-h-n-b1

          Comment

          • lefos
            Badcaps Veteran
            • Nov 2013
            • 321
            • Greece

            #6
            Re: dv9000 not turning on /no leds

            Hello,

            Try to do a light reflow on that gpu. It gets defected quite a lot.
            Hope that the problem is from the gpu.

            Comment

            • Momad
              Member
              • May 2013
              • 24
              • ITALY

              #7
              Re: dv9000 not turning on /no leds

              Hi All!
              Controll flat power & flat Multimedia, there are burned pins or change direction.
              controll for short arround the power Botton, replace the power botton PCB with anather for try.

              Comment

              • highpulse
                i hate HP
                • May 2013
                • 1488
                • portugal

                #8
                Re: dv9000 not turning on /no leds

                well this is strange , all seems to be a s3 state problem . changed SB since he could be the problem , since i didnt have some S3 voltages , bios was changed , KB was changed , gpuwas reballed , NB wwas changed . SO pratically all chips are new here .. Power board i have around 100 of does , try with some same result , changed flat , same result , even shorting the KB pin to ground to make the computer turn on , make the same result .... FUCk

                have 3.3 and 5 no problem , but machine dont turn on ..

                Comment

                • Th3_uN1Qu3
                  Believe in
                  • Jul 2010
                  • 6031
                  • Romania

                  #9
                  Re: dv9000 not turning on /no leds

                  You ruled out pretty much everything else - could be the EC.
                  Originally posted by PeteS in CA
                  Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                  A working TV? How boring!

                  Comment

                  • highpulse
                    i hate HP
                    • May 2013
                    • 1488
                    • portugal

                    #10
                    Re: dv9000 not turning on /no leds

                    Well but EC was also changed , like i posted , KBC , bios ,NB and SB were changed , just gpu i reballed .

                    Comment

                    • highpulse
                      i hate HP
                      • May 2013
                      • 1488
                      • portugal

                      #11
                      Re: dv9000 not turning on /no leds

                      well removed another KBC from another machihne , its working , the kbs i changed previously was also from a spare board (bad luck was damaged)
                      fixed . took me a lot of hand work hours but ok ,, learning another thing , don't trust used stuff
                      ehehhe

                      thk guys

                      Comment

                      • Th3_uN1Qu3
                        Believe in
                        • Jul 2010
                        • 6031
                        • Romania

                        #12
                        Re: dv9000 not turning on /no leds

                        There you go. I would've put my money on the EC/KBC from the start. I keep a lot of boards with removed video chips, but i always check if they still power on before removing any critical parts.
                        Originally posted by PeteS in CA
                        Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                        A working TV? How boring!

                        Comment

                        • tomodachi
                          Badcaps Veteran
                          • Apr 2012
                          • 593
                          • Turkey

                          #13
                          Re: dv9000 not turning on /no leds

                          Same situation here with absolutely same components changed and still no power , Some help please ?
                          ps EC was new
                          Last edited by tomodachi; 08-21-2014, 01:18 AM.

                          Comment

                          • highpulse
                            i hate HP
                            • May 2013
                            • 1488
                            • portugal

                            #14
                            Re: dv9000 not turning on /no leds

                            well got another one in that situation , indeed there were 2 , but one is solved .. now this one , cheked all seems fine .
                            its charging batery but simply not turning on .replaced cpu , the same . i removed GPU just in case some times this nvidia make this to happen , but even without gpu no light no nothing .
                            replaced KB , since i dont have pratically any S3 signals
                            but still the same issue after KBC replace , replaced SB as well , still the same
                            meanwhile i got 3.3 and 5 ok , and drop to 0 when pressed on .

                            Comment

                            • highpulse
                              i hate HP
                              • May 2013
                              • 1488
                              • portugal

                              #15
                              Re: dv9000 not turning on /no leds

                              ok
                              found problem
                              glad to find the fuck#$%$ problem
                              in the end someone cleaned well this baord ... the bloddy white sockets were the flat cables turn on they were making contact insyde , they were green oxidated .. _!_ bloody sockets made me lost a tons of 4 hours.
                              thk anyway guys

                              Comment

                              • markopolo
                                Member
                                • Mar 2014
                                • 27
                                • Slovenia

                                #16
                                Re: dv9000 not turning on /no leds

                                Originally posted by highpulse
                                I there , received here a dv9000 that client mention computer not turning on , well is right for sure , when pressed the on off button we have the 3.3 source and drop to 0 volts and when release recome to 3.3 volts , main step controler also all good , 3.3 and 5 volts ok . battery charges but still not turning on , well i'm a bit stuck here , this has the old NB chip by intel , its a DA0AT7MB8E7 REV:E .
                                any tips will be welcomme .

                                best regards

                                jonathan
                                HI !
                                I'd rather start from the scratch. First measure 19V on the mosfet if this is ok then measure 3,3V and 5V on the regulator chip without pressing a power button this voltages should be present always. If this is ok then measure 3,3 V on SIO chip pin marked as BAT reset should have 3.3V and when the power button is pressed the voltage on this pin is dropped almost to 0. After that also when the power button is pressed measure s5_on voltage should increase to 3,3V. If this is ok it means that SIO chip and the BIOS are ok. If not one of the components is failed.

                                Hope this helps!

                                Comment

                                • highpulse
                                  i hate HP
                                  • May 2013
                                  • 1488
                                  • portugal

                                  #17
                                  Re: dv9000 not turning on /no leds

                                  I there , Markopolo , all this steps i know , but thk anyway for reminding (it will help outher for sure )
                                  there was a conflict on the CN4 , indeed there is still a conflict , i must remove this connector and solder a new one , the pins are still making a bit of contact , when cleaning the contact computer works well , and turn on well . alltought im here with a doubt .

                                  LID_EC should be 3.3 ? i got 1.89 volts is that a normal value ?
                                  that is my only doubt .

                                  Comment

                                  • polytek
                                    Badcaps Veteran
                                    • Dec 2013
                                    • 496
                                    • TUNISIA

                                    #18
                                    Re: dv9000 not turning on /no leds

                                    just replace lid pcb

                                    Comment

                                    • highpulse
                                      i hate HP
                                      • May 2013
                                      • 1488
                                      • portugal

                                      #19
                                      Re: dv9000 not turning on /no leds

                                      hum , but the LID PCB " the on off PCB" is not attached , im turning it on buy the shunt pins between both sockets ,like i do usually for major toshibas and DV's series .
                                      so since there is no on off pcb attached it shouldn't make this value be low .
                                      my question is , wich is usually the value for LID_EC ?

                                      thk in advance

                                      Comment

                                      • polytek
                                        Badcaps Veteran
                                        • Dec 2013
                                        • 496
                                        • TUNISIA

                                        #20
                                        Re: dv9000 not turning on /no leds

                                        LID_EC=3.3V
                                        but in schematic is LID_EC# that mean active low signal so it must be 3.3V as correct value.
                                        lid pcd is not the on/off pcb, it's a separate small pcb linked by to wire to the power pcb on the upper fixed in the cooler
                                        Last edited by polytek; 10-23-2014, 03:56 PM. Reason: add clarification

                                        Comment

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