HP G62 Model G62-b50SG TIC sound

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  • samtron786
    Senior Member
    • Aug 2016
    • 154
    • germany

    #1

    HP G62 Model G62-b50SG TIC sound

    Hello
    You can see some voltages as 3.3V, but 19V is not stabilized and rises and falls with each blink
    The Power LED button will flash and you can hear a TIC sound with each flash.
    where does the TIC sound come from?
    Thank you
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: HP G62 Model G62-b50SG TIC sound

    There is some short on your motherboard. measure resistance to GND on all coils as well as CLR.

    Comment

    • samtron786
      Senior Member
      • Aug 2016
      • 154
      • germany

      #3
      Re: HP G62 Model G62-b50SG TIC sound

      I found the problem
      PQ55 Mosfet replaced now turns on but turns off again after 10 or 20 seconds later

      PQ55
      D=9.80V
      G=19V
      S=19V

      Comment

      • mcplslg123
        Badcaps Legend
        • Jun 2015
        • 7262
        • india

        #4
        Re: HP G62 Model G62-b50SG TIC sound

        Do you get display on screen ? Is your motherboard with ati graphics chip? mention mb part number like DAX1....

        Comment

        • samtron786
          Senior Member
          • Aug 2016
          • 154
          • germany

          #5
          Re: HP G62 Model G62-b50SG TIC sound

          PM_A_HPC_S_MV_MB_V1

          Yes, it starts normally

          Comment

          • samtron786
            Senior Member
            • Aug 2016
            • 154
            • germany

            #6
            Re: HP G62 Model G62-b50SG TIC sound

            Another question: where does the sound come from the coil or electrolytic capacitors?

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india

              #7
              Re: HP G62 Model G62-b50SG TIC sound

              Its difficult to pinpoint the source of ticking sound in such cases as whereever you put yours ears,it'll always confuse you. Model is with discrete graphics or not? Resistance to GND on all coils? These were highlighted earlier but you didnt answered them.

              Comment

              • samtron786
                Senior Member
                • Aug 2016
                • 154
                • germany

                #8
                Re: HP G62 Model G62-b50SG TIC sound

                This is the motherboard pictures

                here 3 coils beep and the values from both sides

                75,8 75,8
                13,8 13,8
                12,6 12,6
                Attached Files

                Comment

                • samtron786
                  Senior Member
                  • Aug 2016
                  • 154
                  • germany

                  #9
                  Re: HP G62 Model G62-b50SG TIC sound

                  P/n :01013tm00-600-g rc8f32003ah1
                  the fan can rotate
                  Last edited by samtron786; 09-22-2023, 08:41 AM.

                  Comment

                  • samtron786
                    Senior Member
                    • Aug 2016
                    • 154
                    • germany

                    #10
                    Re: HP G62 Model G62-b50SG TIC sound

                    What do you have to do when something like this happens?
                    cmos reset 502, then the laptop turns off and no longer starts, you have to wait a day
                    Last edited by samtron786; 09-22-2023, 04:12 PM.

                    Comment

                    • mcplslg123
                      Badcaps Legend
                      • Jun 2015
                      • 7262
                      • india

                      #11
                      Re: HP G62 Model G62-b50SG TIC sound

                      This board is too old to waste your time. It has a discrete amd graphics as well which invariably fails after so many years.

                      Comment

                      • samtron786
                        Senior Member
                        • Aug 2016
                        • 154
                        • germany

                        #12
                        Re: HP G62 Model G62-b50SG TIC sound

                        Yes, it has an ATI graphics chip
                        When I start the laptop the fan also turns
                        the coils don't all beep

                        Comment

                        • piernov
                          Super Moderator
                          • Jan 2016
                          • 4435
                          • France

                          #13
                          Re: HP G62 Model G62-b50SG TIC sound

                          Northbridge is also well known for being unreliable.
                          Best solution is to replace motherboard (+CPU and heatsink) with an Intel platform without dGPU. There are a few Intel boards for G62 but not sure which one would fit exactly your chassis, possibly the PM_I_HPC_S MV_MB_V3.
                          Also gives better performance, battery life and less heat.
                          Last edited by piernov; 09-26-2023, 06:32 AM.
                          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                          Comment

                          • samtron786
                            Senior Member
                            • Aug 2016
                            • 154
                            • germany

                            #14
                            Re: HP G62 Model G62-b50SG TIC sound

                            OK thanks
                            Battery is also being charged
                            then I have to see if I can find another motherboard

                            Comment

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