IBM R50e schematics

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  • dj_ricoh
    Badcaps Legend
    • Jan 2013
    • 2073
    • uk

    #41
    Re: IBM R50e schematics

    Originally posted by rtstorm
    Q4
    pin1 - 0.3V
    pin2 - 0.56V
    pin3 - 0V
    pin4 - 0V
    pin5 - 0.3V
    pin6 - 0.3V
    pin7 - 16V
    pin8 - 16V

    L5 coil have 0.3V on both side
    its that fet ok?

    keep in mind that`s a dual N-channel fet
    Attached Files
    Last edited by dj_ricoh; 06-11-2014, 01:20 AM.
    Just cook it! It's already broken.

    Comment

    • atsio
      Badcaps Veteran
      • Oct 2013
      • 819
      • Greece

      #42
      Re: IBM R50e schematics

      Originally posted by rtstorm
      @ atsio

      Q13
      pin1 - 2.99V
      pin2 - 2.89V
      pin3 - 2.89V
      pin4 - 1.2V
      pin5 - 15.96V
      pin6 - 15.96V
      pin7 - 15.96V
      pin8 - 15.96V

      R422 i cannot find (KODIAK program wont display it)
      R453 one side is 16.3V and other side is -7.8V

      I did not use the battery while i was testing.
      What is KODIAK?

      Remove D10 and D19 and inject 16v with regulated power supply (use quite thick cable for say, 5 amps) to pin 3 of D10 and check if laptop starts.
      After, check voltages on pins of U61 I asked for in my previous message.
      Last edited by atsio; 06-11-2014, 01:47 AM.

      Comment

      • rtstorm
        Badcaps Veteran
        • Feb 2012
        • 971
        • Croatia

        #43
        Re: IBM R50e schematics

        i try to remove D10 and D19 then i inject 16V on pin 3 of D10 laptop wont start.

        U61:
        pin57 - 16V
        pin34 - 16V
        pin55 - 0V
        pin52 - 0.5V
        pin54 - 4.4V
        pin10 - 0.2V
        pin11 - 0.1V
        pin44 - 0V
        pin58 - 0V
        pin59 - 0V

        Kodiak is the software i use for fide the device on MB. there is no marking on MB itself.
        Attached Files
        ...the quieter you become the more you are able to hear...

        Comment

        • rtstorm
          Badcaps Veteran
          • Feb 2012
          • 971
          • Croatia

          #44
          Re: IBM R50e schematics

          Originally posted by rtstorm
          @ atsio


          R453 one side is 16.3V and other side is -7.8V
          this R453 has F marking on it (probabbly fuse) wont pass continuity test. i think it is dead
          ...the quieter you become the more you are able to hear...

          Comment

          • rtstorm
            Badcaps Veteran
            • Feb 2012
            • 971
            • Croatia

            #45
            Re: IBM R50e schematics

            Originally posted by rtstorm
            this R453 has F marking on it (probabbly fuse) wont pass continuity test. i think it is dead
            i bridge the F but nothing changed, still no power on MB
            ...the quieter you become the more you are able to hear...

            Comment

            • rtstorm
              Badcaps Veteran
              • Feb 2012
              • 971
              • Croatia

              #46
              Re: IBM R50e schematics

              hey where is the BIOS IC? is it U15, U53 or U3? maybe i sloud chek bios?
              ...the quieter you become the more you are able to hear...

              Comment

              • rtstorm
                Badcaps Veteran
                • Feb 2012
                • 971
                • Croatia

                #47
                Re: IBM R50e schematics

                please help me extract dump file from this
                Attached Files
                ...the quieter you become the more you are able to hear...

                Comment

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