yoga 500 14isk charging problem

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  • Prosatanosz
    Senior Member
    • Nov 2015
    • 108
    • Hungary
    #1

    yoga 500 14isk charging problem

    Hi!

    LT41 skl mb
    14292-1
    448.06701.0011

    Windows say charging/not charging continously. Unit works from battery and / or ac. On PU4403 voltage is varies 0.5V continously. Charger is BQ24780. No short fets.

    Thx
    Last edited by Prosatanosz; 02-03-2020, 07:19 AM.
    Tags: None
    • Prosatanosz
      Senior Member
      • Nov 2015
      • 108
      • Hungary
      #2
      Re: yoga 500 14isk charging problem

      Replace BQ24780S and vcc resistor like this https://www.badcaps.net/forum/showth...ighlight=14isk

        Comment

        • nrcslim89
          Senior Member
          • Nov 2019
          • 130
          • Portugal
          #3
          Re: yoga 500 14isk charging problem

          Originally posted by Prosatanosz
          Replace BQ24780S and vcc resistor like this https://www.badcaps.net/forum/showth...ighlight=14isk
          Watch out, be careful doing this, yes it solves the problem, but after one week laptop dead.
          Yes totally dead, I check and on 1275C IC I have a short on some caps too, I fixed them with Mosfet replace, but after that I still have one cap in short and checking with boardview I found lots of shorts I will post pictures.

            Comment

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