Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

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  • sikocan
    Badcaps Veteran
    • Oct 2019
    • 344
    • Australia

    #21
    Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

    With battery - Power button does not bring up Orange LED. Does not turn on either.

    However Power Button: FPR_SSO_SW# has 2.99 - and it does drop to 0 when power button pressed and held.

    Comment

    • sikocan
      Badcaps Veteran
      • Oct 2019
      • 344
      • Australia

      #22
      Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

      Replaced with another ISL9538HRTZ, no difference.

      Comment

      • mcplslg123
        Badcaps Legend
        • Jun 2015
        • 7262
        • india

        #23
        Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

        With new battery,is it charging now?? PS_ID present??

        Comment

        • sikocan
          Badcaps Veteran
          • Oct 2019
          • 344
          • Australia

          #24
          Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

          PS_ID 3.31 measured at EC4311.
          I don't think battery is charging. As it stays at 12.58 at point PR4407.

          Comment

          • sikocan
            Badcaps Veteran
            • Oct 2019
            • 344
            • Australia

            #25
            Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

            I have many Genuine Dell all the same + Tried a 90W Compatible works on other Dells and detected well in BIOS, all the same issues. So Chargers, Battery, Charge Controller ISL CHIP are fine.

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india

              #26
              Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

              Originally posted by sikocan
              PS_ID 3.31 measured at EC4311.
              I don't think battery is charging. As it stays at 12.58 at point PR4407.
              Voltage at PR4407 will remain the same even if its charging. Thats not the indicator whether its charging or not. If you have a dc supply, then you can observe the consumption and confirm whether its charging or not.

              Comment

              • sikocan
                Badcaps Veteran
                • Oct 2019
                • 344
                • Australia

                #27
                Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

                Not charging. I've uploaded 6 photos for your reference:
                https://photos.app.goo.gl/ffZzLP4wJ3Krcxdj6

                Comment

                • sikocan
                  Badcaps Veteran
                  • Oct 2019
                  • 344
                  • Australia

                  #28
                  Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

                  Hi all, I've uploaded a short video showing weird behaviour of Battery coil with and without battery.

                  https://youtu.be/1odmLELSR4M

                  Comment

                  • carrneiro
                    New Member
                    • Mar 2020
                    • 4
                    • poland

                    #29
                    Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

                    Check R4310 and RN4302.
                    RN4302 pin 1, 4 voltage to ground when machine is turned on?
                    Last edited by carrneiro; 02-03-2023, 08:23 AM.

                    Comment

                    • sikocan
                      Badcaps Veteran
                      • Oct 2019
                      • 344
                      • Australia

                      #30
                      Re: Dell Vostro 5490 Not turning on. Orange LED when power button pressed only

                      Hi there,

                      R4310 measures 100ohms as per schematics. 97kOhms to ground without any power on board. Both sides when battery only is in is 0V. With charger in 0v.


                      RN4310 resistance/voltage
                      Pin 1 13.7k / 0v (with battery) / 3.34v with charger and battery, remains same when power button is pressed down.
                      Pin 2 14.3k / 0v (with battery) / 3.34v with charger and battery, remains same when power button is pressed down.
                      Pin 3 14.3k / 0v (with battery) / 3.34v with charger and battery, remains same when power button is pressed down.
                      Pin 4 14.4k / 0v (with battery) / 3.34v with charger and battery, remains same when power button is pressed down.

                      Comment

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