Lenovo G510 LA-9641P I7

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  • Prosatanosz
    Senior Member
    • Nov 2015
    • 108
    • Hungary
    #1

    Lenovo G510 LA-9641P I7

    Hi!

    After plug in charger 3/5V goes on for 3 seconds. Then off, and died. Need unplug charger a while, and the same symptome. Any idea?

    Thx
    Tags: None
    • lapfix
      Badcaps Legend
      • Mar 2020
      • 2764
      • my workshop
      #2
      Re: Lenovo G510 LA-9641P I7

      First, visually inspect all the components , than measre the Impedance on all coils/jumpers to see if there is short.

        Comment

        • Prosatanosz
          Senior Member
          • Nov 2015
          • 108
          • Hungary
          #3
          Re: Lenovo G510 LA-9641P I7

          Ok. There is no short, or damage. Bios rewritten, cpu changed, cmos battery removed. The first thing was a shorted yellow cap on the 19v rail. I was so happy to find it........

            Comment

            • ktmmotocross
              Boardkiller
              • Feb 2014
              • 3627
              • slovakia
              #4
              Re: Lenovo G510 LA-9641P I7

              Originally posted by Prosatanosz
              Ok. There is no short, or damage. Bios rewritten, cpu changed, cmos battery removed. The first thing was a shorted yellow cap on the 19v rail. I was so happy to find it........
              still the same symptoms?

                Comment

                • Prosatanosz
                  Senior Member
                  • Nov 2015
                  • 108
                  • Hungary
                  #5
                  Re: Lenovo G510 LA-9641P I7

                  Yes

                    Comment

                    • ktmmotocross
                      Boardkiller
                      • Feb 2014
                      • 3627
                      • slovakia
                      #6
                      Re: Lenovo G510 LA-9641P I7

                      do u have 3V and 5v reg voltage on 3/5V chip ?
                      do u have 19V after 5secons?

                        Comment

                        • Prosatanosz
                          Senior Member
                          • Nov 2015
                          • 108
                          • Hungary
                          #7
                          Re: Lenovo G510 LA-9641P I7

                          3V/5V ok for 3 seconds, 19V allways ok.

                            Comment

                            • ktmmotocross
                              Boardkiller
                              • Feb 2014
                              • 3627
                              • slovakia
                              #8
                              Re: Lenovo G510 LA-9641P I7

                              and reg voltages?

                                Comment

                                • bob42
                                  New Member
                                  • Sep 2020
                                  • 7
                                  • Украина
                                  #9
                                  Re: Lenovo G510 LA-9641P I7

                                  Check + 3VLP on pu401 5pin

                                    Comment

                                    • Prosatanosz
                                      Senior Member
                                      • Nov 2015
                                      • 108
                                      • Hungary
                                      #10
                                      Re: Lenovo G510 LA-9641P I7

                                      Sorry, i give up.

                                        Comment

                                        • Mazorca
                                          Badcaps Veteran
                                          • Jan 2017
                                          • 463
                                          • USA
                                          #11
                                          Re: Lenovo G510 LA-9641P I7

                                          Check power button board if it has one, I just had a toshiba c55-B that displayed same simptoms, on for 2-3 seconds, screen lit up, and then turned off. Possible liquid damage on board.

                                            Comment

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