Samsung NP3530EC wont start without battery

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  • ciki
    Senior Member
    • Aug 2014
    • 132
    • Ireland

    #1

    Samsung NP3530EC wont start without battery

    Hi need help with this laptop with battery inserted laptop start normal ,charger connected and battery start normal and lights for charging is orange color not sure is that mean that charging battery or not ,without battery wont start .Dont have shematic, charger tested ok work on another samsung laptop .

    Last edited by ciki; 03-07-2015, 11:54 AM.
  • rs232killer
    Senior Member
    • Feb 2015
    • 89
    • Portugal

    #2
    Re: Samsung NP3530EC wont start without battery

    hi
    can you post mb model (near sd reader)

    Comment

    • ciki
      Senior Member
      • Aug 2014
      • 132
      • Ireland

      #3
      Re: Samsung NP3530EC wont start without battery

      Comment

      • ciki
        Senior Member
        • Aug 2014
        • 132
        • Ireland

        #4
        Re: Samsung NP3530EC wont start without battery

        Anyone please?

        Comment

        • dj_ricoh
          Badcaps Legend
          • Jan 2013
          • 2073
          • uk

          #5
          Re: Samsung NP3530EC wont start without battery

          do some probing manual without schematic.
          check for some fets that are from dc jack to charging IC

          because now its going straight to BAT line
          Just cook it! It's already broken.

          Comment

          • ciki
            Senior Member
            • Aug 2014
            • 132
            • Ireland

            #6
            Re: Samsung NP3530EC wont start without battery

            Thx I do some of the check all have voltage no shorts ,one thing is make me bother on battery connection 2 pins have only 1.05 V should be 3.3V maybe ?

            Last edited by ciki; 03-10-2015, 06:40 AM.

            Comment

            • ciki
              Senior Member
              • Aug 2014
              • 132
              • Ireland

              #7
              Re: Samsung NP3530EC wont start without battery

              anybody????

              Comment

              • ansari4u
                New Member
                • Mar 2015
                • 2
                • India

                #8
                Re: Samsung NP3530EC wont start without battery

                check mosfets in between dc jack and charging ic

                Comment

                • ciki
                  Senior Member
                  • Aug 2014
                  • 132
                  • Ireland

                  #9
                  Re: Samsung NP3530EC wont start without battery

                  see the picture above i did

                  Comment

                  • rs232killer
                    Senior Member
                    • Feb 2015
                    • 89
                    • Portugal

                    #10
                    Re: Samsung NP3530EC wont start without battery

                    Hi
                    try to

                    bypass the 2nd mosfet in 19v line , if powers on without bat change the 2 mosfets.

                    let me know how it worked

                    Comment

                    • ciki
                      Senior Member
                      • Aug 2014
                      • 132
                      • Ireland

                      #11
                      Re: Samsung NP3530EC wont start without battery

                      Try and still same changed with another one from second motherboard

                      Comment

                      • makhlouf
                        New Member
                        • Jan 2016
                        • 4
                        • ireland

                        #12
                        Re: Samsung NP3530EC wont start without battery

                        hi i have same laptop and exact same problem if you have fixed your let me know the solution thanks much

                        Comment

                        • gcomputers
                          Badcaps Veteran
                          • Apr 2013
                          • 509
                          • Albania

                          #13
                          Re: Samsung NP3530EC wont start without battery

                          Originally posted by makhlouf
                          hi i have same laptop and exact same problem if you have fixed your let me know the solution thanks much
                          Replace second mosfet see picture on post #6 fisrt mosfet pin1,,8 19 v , second mosfet pin 1234 19v pin 5678 0.95 This mosfet from my experience need to replace

                          Comment

                          • makhlouf
                            New Member
                            • Jan 2016
                            • 4
                            • ireland

                            #14
                            Re: Samsung NP3530EC wont start without battery

                            thanks ,any website you know to buy mosfet
                            ref is 9402gyt
                            24905e
                            thanks

                            Comment

                            • gcomputers
                              Badcaps Veteran
                              • Apr 2013
                              • 509
                              • Albania

                              #15
                              Re: Samsung NP3530EC wont start without battery

                              Originally posted by makhlouf
                              thanks ,any website you know to buy mosfet
                              ref is 9402gyt
                              24905e
                              thanks
                              http://www.ebay.com/itm/2pcs-AP-9402...-/360855874322

                              Comment

                              • makhlouf
                                New Member
                                • Jan 2016
                                • 4
                                • ireland

                                #16
                                Re: Samsung NP3530EC wont start without battery

                                thanks much for your help
                                i will let you know the result
                                till then

                                Comment

                                • makhlouf
                                  New Member
                                  • Jan 2016
                                  • 4
                                  • ireland

                                  #17
                                  Re: Samsung NP3530EC wont start without battery

                                  is this one the prob?
                                  Attached Files

                                  Comment

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