tps51225 burns hot

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  • rookieme
    Badcaps Veteran
    • Oct 2014
    • 396
    • Greece
    #1

    tps51225 burns hot

    I have a NEWTON_BR_HPC motherboard that has no power issue.
    I can't find the schematic but tps51225 burn hot.
    I replaced it but I have the same result.
    I couldn't find any shorts.
    Any suggetions?
    Tags: None
    • rievax_60
      Badcaps Veteran
      • May 2012
      • 897
      • australia
      #2
      Re: tps51225 burns hot

      See the data PDF for the TPS51225, It has two LDO regulators that are always on, 3.3v and 5v. Do they have the correct voltage output?

        Comment

        • rookieme
          Badcaps Veteran
          • Oct 2014
          • 396
          • Greece
          #3
          Re: tps51225 burns hot

          The two LDO are pin 3 and 13.
          The issue is that can I power it and do the measures or will it be further be damaged by the heat produced?
          Attached Files

            Comment

            • rievax_60
              Badcaps Veteran
              • May 2012
              • 897
              • australia
              #4
              Re: tps51225 burns hot

              There is a risk. Just don't leave it on for too long or check for shorts on both rails.

                Comment

                • bushie
                  Senior Member
                  • Dec 2013
                  • 57
                  • Romania
                  #5
                  Re: tps51225 burns hot

                  Change the ITE.

                    Comment

                    • rookieme
                      Badcaps Veteran
                      • Oct 2014
                      • 396
                      • Greece
                      #6
                      Re: tps51225 burns hot

                      No shorts at the rails.
                      Well my second thought was the ITE, could it be the cause?
                      I maybe remove it to see without it.

                        Comment

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