Lenovo Ideapad U410 - TPS51220A

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  • Bimad99
    Member
    • Jun 2023
    • 37
    • Algeria
    #1

    Lenovo Ideapad U410 - TPS51220A

    Hello everyone,

    i have this lenovo laptop with power issues.
    i tracked the problem down and i found the 5VPCU and 3VPCU are switching on and off continually, they are enabled with 5v LDO which causing the issue.

    down below are pics of 5v LDO compared to 5VPCU and 3VPCU captured with DSO.
    Yellow is 5v LDO
    Blue is 5VPCU or 3VPCU

    If anyone has any idea plz help and thanx in advance.
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    • Bimad99
      Member
      • Jun 2023
      • 37
      • Algeria
      #2
      Re: Lenovo Ideapad U410 - TPS51220A

      Any help ????

        Comment

        • Techtiger
          Badcaps Legend
          • Oct 2014
          • 1602
          • france
          #3
          Re: Lenovo Ideapad U410 - TPS51220A

          Are you experiencing a glitch in the output of PL9 and PL10? If so, replace PC221, PC165, PC150, and PC216 and check if there are any changes. Additionally, test if PU4 VIN is stable or not

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