17IPS55 Vestel PSU repair.

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  • zen
    Badcaps Veteran
    • Apr 2011
    • 511
    #1

    17IPS55 Vestel PSU repair.

    P/N 23396951

    Schematic might be handy.

    First casualties

    Q4 (Magnachip MDF13N50) S/C

    As a precaution also replace Q3 which is same type.

    Both replace using B version of FET.
    Attached Files

    if you find these attachements useful please consider making a small donation to the site

    Tags: None
    • zen
      Badcaps Veteran
      • Apr 2011
      • 511
      #2
      Re: 17IPS55 Vestel PSU repair.

      Replace

      U12 (FAN7631), which is the gate drive chip for FETS.

      U5 (817) OPTO, which had a strange reading first time I checked it.

      Now working on test.
      Attached Files

      if you find these attachements useful please consider making a small donation to the site

        Comment

        • notallbad
          Badcaps Legend
          • Oct 2012
          • 1190
          • UK
          #3
          Re: 17IPS55 Vestel PSU repair.

          what fault did the board have?

            Comment

            • zen
              Badcaps Veteran
              • Apr 2011
              • 511
              #4
              Re: 17IPS55 Vestel PSU repair.

              Hi

              Customer complained of not powering.

              I didn't actually plug the set in myself as i discovered FETS were short on a cold test, which is my normal M.O to prevent further damage.

                Comment

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