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[SOLVED]820-2936 green and orange light but wont turn on

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  • [SOLVED]820-2936 green and orange light but wont turn on

    got in a 2936 with a green light and orange light with battery in, but no fan spin and wont power up. also the fan spins with a smc bypass. i will test all the rails to see if anything is missing, it is a heavily liquid damaged board.

  • #2
    PPVIN_SW_T29BST -.34v

    PPBUS_S5_HS_COMPUTING_ISNS - 12.57v

    PPBUS_S5_HS_OTHER_ISNS -12.57v

    PPDCIN_G3H -18.87v

    PP3V42_G3H - 3.48v

    PPVRTC_G3H - 3.32v

    PP5V_S5 - 5.03v

    PP5V_SUS - 5.03v

    PP5V_S3 - 5.03v

    PP5V_S0 - 5.03v

    PP3V3_S5 - 3.32v

    PP3V3_SUS - 3.32v

    PP3V3_S4 - 3.32v

    PP3V3_S3 - 3.32v

    PP3V3_S0 - 3.31v

    PP1V8_S0 -1.8v

    PP1V5_S3 -1.5v

    PP1V5_S3RS0 -1.5v

    PP1V5_S0 -1.5v

    PPVTTDDR_S3 -.75v

    PP0V75_S0_DDRVTT -0v

    PPVCCSA_S0_CPU -.90v

    PP1V05_SUS -1.06v

    PP1V05_S0 -.04v
    (.026v to gnd in diode mode)

    it appears PP1V05_S0 is not present.

    Comment


    • #3
      Resistance to GND on 1v5_s0?

      Comment


      • #4
        .342v to gnd in diode mode on pp1v5_s0. i do have 1.5v there also.

        Comment


        • #5
          I guess it was a typo, maybe Duke is asking for resistance on the missing voltage rail.............

          CPUVCCIOS0_EN present????

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          • #6
            Well if that is the case i have the resistance listed
            PP1V05_S0 -.04v
            (.026v to gnd in diode mode)

            Yes CPUVCCIOS0_EN is 3.24v on pin 3 of the u7600

            Comment


            • #7
              ok resistance is not the same as diode mode!!

              Comment


              • #8
                Enable is there and there seems to be no short, I will let you decide what could be the problem.

                Comment


                • #9
                  okay replaced the u7600 and everything's working. (solved)

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