my s3 mini wont turn on

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  • mista
    Senior Member
    • Apr 2015
    • 92
    • belgium

    #1

    my s3 mini wont turn on

    hi friend my s3 mini wont turn on any solution ?

    do you have some schematic ? my battery is 3.2v is it ok to turn on the phone?

    thanx
  • piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    #2
    Re: my s3 mini wont turn on

    3.2V is not enough, you need at least 3.4V IIRC. Nominal voltage is 3.8V and a fully charged battery should be a bit above 4V.
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment

    • mista
      Senior Member
      • Apr 2015
      • 92
      • belgium

      #3
      Re: my s3 mini wont turn on

      hi ok thanx a lot for confirmation so how can i charge it by pass to see if the problem is the charger port or the battery it self because i change charger but same problem

      Comment

      • xfce
        Member
        • Aug 2017
        • 18
        • Bulgaria

        #4
        Re: my s3 mini wont turn on

        hello,
        the easiest way is to check if you get ~4.2v(while charging) on the pins where battery is connecting(for that you need multimeter) . If you get it, means that the route from charging port to the battery is ok. Battery itself should not go above 3.7v (if on the battery is written 3.7v) even when is fully charged. More then that means battery is not good.

        Comment

        • mista
          Senior Member
          • Apr 2015
          • 92
          • belgium

          #5
          Re: my s3 mini wont turn on

          hi and thanx for reply but how can i check charging by multimeter un put two wires from multimeter and charging by usb port?

          regards

          Comment

          • kc8adu
            Super Moderator
            • Nov 2003
            • 8832
            • U.S.A!

            #6
            Re: my s3 mini wont turn on

            easiest way is to plug it into a usb monitor.
            battery that low may be in pre charge.about 50ma.
            there will be no signs of life till it goes to full charging current.
            then it will go to startup then battery level.
            if you dont see any current draw on the monitor look at the usb jack.
            i replace them all the time.
            full charge voltage is 4.35v
            http://www.ebay.com/itm/DROK-USB-2-0...3520548http://

            Comment

            • mista
              Senior Member
              • Apr 2015
              • 92
              • belgium

              #7
              Re: my s3 mini wont turn on

              hi friend thanx a lot for your help your link is not working

              what do you call usb monitor

              sorry i m beginner if you have some picture or video to understand

              thanx a lot for help

              Comment

              • diif
                Badcaps Legend
                • Feb 2014
                • 6978
                • England

                #8
                Re: my s3 mini wont turn on

                Originally posted by mista
                hi friend thanx a lot for your help your link is not working

                what do you call usb monitor

                sorry i m beginner if you have some picture or video to understand

                thanx a lot for help
                Something like this.
                http://www.ebay.co.uk/itm/LCD-USB-De...-/292076965244

                Comment

                • vinceroger69
                  Badcaps Legend
                  • Mar 2012
                  • 6714
                  • uk

                  #9
                  Re: my s3 mini wont turn on

                  this is the one i have got
                  https://www.youtube.com/watch?v=oANNq7Q83f4

                  Comment

                  • mista
                    Senior Member
                    • Apr 2015
                    • 92
                    • belgium

                    #10
                    Re: my s3 mini wont turn on

                    hi guys thanx a lot for sharing i understood now for checking

                    Comment

                    • mista
                      Senior Member
                      • Apr 2015
                      • 92
                      • belgium

                      #11
                      Re: my s3 mini wont turn on

                      i im waiting for usb monitor and i will try the test ...

                      to be continued

                      regards

                      Comment

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