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820-2936-B PP3V3_S5 voltage not solid

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  • 820-2936-B PP3V3_S5 voltage not solid

    (sample: before 0.123v -2.255v- 3.453v after 0.123v -2.255v- 3.453v Variable )

    I replace u7000 ok
    replace u4900 ok
    replace u7200 ok
    replace u7941 ok

    but same problem

    thanks


  • #2
    I would measure some voltages before randomly replacing parts. PPBUS, SMC_G2_EN? Are any other voltages pulsing too?

    Comment


    • #3
      SMC_G2_EN no stabile before 0.123v -2.255v- 3.453v after 0.123v -2.255v- 3.453v the same

      PP3V42_G3H 3.475 V stabile
      PPBUS_G3H 12V stabile


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      • #4
        Please help

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        • #5
          is PPBUS_G3H 12.23v or 12.56v?

          Comment


          • #6
            PPBUS_G3H 12.38v sometimes 12.42v ,12,56v no stabile

            Comment


            • #7

              The problem continues

              Comment


              • #8
                SMC_RESET_L stable????

                Comment


                • #9
                  Yes. 3.477v stable

                  Comment


                  • #10
                    Do you have a green light on the charger?

                    Comment


                    • #11
                      Yes of course

                      Comment


                      • #12
                        Is L7260 voltage pulsing too?

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                        • #13
                          No voltage L7260..But l7220 a have voltage no stabile (sample: before 0.123v -2.255v- 3.453v after 0.123v -2.255v- 3.453v Variable )

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                          • #14
                            Bad SMC or TPS51125.

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