lenovo v460 no power

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  • alihomee
    Badcaps Legend
    • Dec 2012
    • 1574
    • malaysia

    #1

    lenovo v460 no power

    today get this one with complete dead condition.3v present on power switch and also on small 128kb chip. when connect with dc power supply the standby current is 0.03a...................any ideas or schematic
  • alihomee
    Badcaps Legend
    • Dec 2012
    • 1574
    • malaysia

    #2
    Re: lenovo v460 no power

    any body

    Comment

    • are-red
      Member
      • Feb 2013
      • 24
      • malaysia

      #3
      Re: lenovo v460 no power

      its 5v present? try to re-flash the bios first

      Comment

      • robrock1
        Senior Member
        • Jul 2013
        • 129
        • Ghana

        #4
        Re: lenovo v460 no power

        see if something is getting hot somewhere, standby current is mostly around 0.01 - check around power and charging ic maybe a capacitor or diode is leaking?

        Comment

        • alihomee
          Badcaps Legend
          • Dec 2012
          • 1574
          • malaysia

          #5
          Re: lenovo v460 no power

          i do not have the files to flash bios. one chip is 128kb and one is 4mb....

          Comment

          • Francisco.s
            Badcaps Veteran
            • Jan 2013
            • 686
            • Spain

            #6
            Re: lenovo v460 no power

            Originally posted by alihomee
            i do not have the files to flash bios. one chip is 128kb and one is 4mb....
            Check this and post results. The 128KB chips is the one I´d program first.
            Attached Files

            Comment

            • dj_ricoh
              Badcaps Legend
              • Jan 2013
              • 2073
              • uk

              #7
              Re: lenovo v460 no power

              last time i try to find out why it did not power up i ended up reflowing and it when back to normal.
              Just cook it! It's already broken.

              Comment

              • alihomee
                Badcaps Legend
                • Dec 2012
                • 1574
                • malaysia

                #8
                Re: lenovo v460 no power

                which chip u reflow

                Comment

                • dj_ricoh
                  Badcaps Legend
                  • Jan 2013
                  • 2073
                  • uk

                  #9
                  Re: lenovo v460 no power

                  Originally posted by alihomee
                  which chip u reflow
                  cuz i run out of ideas i cook the board
                  it power after
                  Just cook it! It's already broken.

                  Comment

                  • alihomee
                    Badcaps Legend
                    • Dec 2012
                    • 1574
                    • malaysia

                    #10
                    Re: lenovo v460 no power

                    hahah funny repair

                    Comment

                    • alihomee
                      Badcaps Legend
                      • Dec 2012
                      • 1574
                      • malaysia

                      #11
                      Re: lenovo v460 no power

                      today done it by reflashing both chips

                      Comment

                      • jtamad44
                        Senior Member
                        • Apr 2013
                        • 145
                        • israel

                        #12
                        Re: lenovo v460 no power

                        Originally posted by alihomee
                        today done it by reflashing both chips

                        Good job! Can you please share the bios.bin file..

                        Comment

                        • tomodachi
                          Badcaps Veteran
                          • Apr 2012
                          • 602
                          • Turkey

                          #13
                          Re: lenovo v460 no power

                          a few days ago I fixed a no power problem reflashing the eprom.

                          Comment

                          • alihomee
                            Badcaps Legend
                            • Dec 2012
                            • 1574
                            • malaysia

                            #14
                            Re: lenovo v460 no power

                            Originally posted by jtamad44
                            Good job! Can you please share the bios.bin file..
                            try this one
                            Attached Files

                            Comment

                            • jtamad44
                              Senior Member
                              • Apr 2013
                              • 145
                              • israel

                              #15
                              Re: lenovo v460 no power

                              Thanks alihomee!

                              Comment

                              • ravi_1617
                                YY Solutions
                                • Jan 2012
                                • 345
                                • India

                                #16
                                Re: lenovo v460 no power

                                Hi !
                                dead board same model . no power at any coils no 3.3 or 5 volt switch has power .
                                some power at ec bios pin no 1.
                                changed tps51123.
                                u2 SMSC EMC2103 had a HOLE or pop

                                Thanks
                                Attached Files

                                Comment

                                • ravi_1617
                                  YY Solutions
                                  • Jan 2012
                                  • 345
                                  • India

                                  #17
                                  Re: lenovo v460 no power

                                  Thanks alihomee!
                                  display came it was ec bios problem
                                  with your B560 worked in my v460
                                  Thanks

                                  Comment

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