Hitachi L26DG07U

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  • Easky15
    Badcaps Veteran
    • Sep 2013
    • 285
    • Ireland
    #1

    Hitachi L26DG07U

    Hello all, I have here a tv a friend gave me, It stopped working for him, No power at all, I had a quick look and AC side seems fine but the DC side is unlabled so I'm not sure which wires to test,
    Does anyone know how i would go about fixing this problem,

    I've included a few pics so hope that helps,
    Attached Files
    Tags: None
    • Andrew F. Ali
      Badcaps Legend
      • Jan 2014
      • 2450
      • Trinidad & Tobago
      #2
      Re: Hitachi L26DG07U

      1. Check fuse first....they are not good?..... NO....replace with same type and rating...does it work now?
      2. Check fuse first....they are good?.....YES.....measure for St-By voltage approx. 5Vdc on cable from PSU to Main Bd.....NO St-By voltage?.....Replace PSU....does it work now?
      3. Check fuse first....they are good?.....YES.....measure for St-By voltage on cable from PSU to Main Bd...YES St-By voltage approx. 5Vdc present...Press power button to turn on set....Ps-ON signal from Main Bd??

        Comment

        • dskall
          Badcaps Legend
          • Oct 2016
          • 2905
          • usa
          #3
          Re: Hitachi L26DG07U

          Any pin markings on mainboard or on backside of boards?
          I assume no responsibility for any stupid suggestions I might post.

            Comment

            • dick_barton
              Badcaps Legend
              • Aug 2015
              • 6642
              • Wales
              #4
              Re: Hitachi L26DG07U

              Power supply circuit board looks very similar but not identical to, however should be a guide.
              Attached Files
              Willing to help but I'm no expert.

                Comment

                • Easky15
                  Badcaps Veteran
                  • Sep 2013
                  • 285
                  • Ireland
                  #5
                  Re: Hitachi L26DG07U

                  Ok, got new Power board and now the set powers up but there is a slight high pitched squeal fro the board and it goes back to standby about 5 seconds after powering on,

                  Would i be right in thinking that is possibly bad caps?

                    Comment

                    • dskall
                      Badcaps Legend
                      • Oct 2016
                      • 2905
                      • usa
                      #6
                      Re: Hitachi L26DG07U

                      Sounds like a short on the secondary side
                      I assume no responsibility for any stupid suggestions I might post.

                        Comment

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