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Asus VIVOBOOK 17 F705M (mainboard x705ma) repair

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    Asus VIVOBOOK 17 F705M (mainboard x705ma) repair

    anyone happen to know what chip this is? It's from a Vivobook 17 F705M (mainboard x705ma) and seems to be a PMIC of sort with a crack in it. I initially thought the problem was a blown n-channel mosfet on the other side of the board but even after swapping it I was getting bad readings on the mosfet. that is when i found this pretty boy here. it looks like it says 65=8G W3G but not sure. you can just make out the crack at the top left of the pic
    Attached Files

    #2
    Originally posted by Slydder View Post
    anyone happen to know what chip this is? It's from a Vivobook 17 F705M (mainboard x705ma) and seems to be a PMIC of sort with a crack in it. I initially thought the problem was a blown n-channel mosfet on the other side of the board but even after swapping it I was getting bad readings on the mosfet. that is when i found this pretty boy here. it looks like it says 65=8G W3G but not sure. you can just make out the crack at the top left of the pic
    PWM CONTROLLER ATK1602AGQW//RICHTEK WQFN-28L

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      #3
      https://www.badcaps.net/forum/troubl...5-5g-and-5e-5e

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        #4
        Originally posted by noname2024 View Post

        PWM CONTROLLER ATK1602AGQW//RICHTEK WQFN-28L
        where did you get that info? have not been able to find anything.

        and THANKS for the info.

        Comment


          #5
          Originally posted by Slydder View Post

          where did you get that info? have not been able to find anything.

          and THANKS for the info.
          Please take a picture of the component's location on the motherboard. I will help you.

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            #6
            ..... Click image for larger version

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              #7
              cool.

              next to the DC in there is a via that goes somewhere. no idea where and it's killin me. I have 19V at the mosfet but 0v on the other side. if I bridge the cap below the mosfet I get all rails. but then it just hangs.

              The second pic is where the pmic is on the backside of the board
              Attached Files

              Comment


                #8
                Originally posted by Slydder View Post
                cool.

                next to the DC in there is a via that goes somewhere. no idea where and it's killin me. I have 19V at the mosfet but 0v on the other side. if I bridge the cap below the mosfet I get all rails. but then it just hangs.

                The second pic is where the pmic is on the backside of the board
                this Click image for larger version

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                  #9
                  check CHARGE MANAGE IC SN2867RUYR//TI QFN-28

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                    #10
                    sorry guy. I dont have schematic or boardview for it. that's why I am a bit lost here. where is SN2867RUYR//TI QFN-28?

                    Comment


                      #11
                      Originally posted by Slydder View Post
                      sorry guy. I dont have schematic or boardview for it. that's why I am a bit lost here. where is SN2867RUYR//TI QFN-28?
                      here
                      Click image for larger version

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                        #12
                        OK. Nor shorts directly on the chip legs.

                        VCC (pin 28) is 19v and ACOK (pin 5) is ca. 6v which is above 2.4v for High. ACDET (pin 6) is 2.7v

                        REGN (pin 24) is 6V

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