Samsung CK-21H1TR

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  • ragis
    Senior Member
    • Mar 2013
    • 51
    • Bulgaria
    #1

    Samsung CK-21H1TR

    Hey guys,
    I'm having a problem with my CRT TV it has color lines on top of it's screen.
    The problem is similar like this youtube video: http://www.youtube.com/watch?v=1FwcILZ2MoI

    I replaced 2 caps that i think were bad:

    100uf 25V
    2200uf 25V

    They were next to the vertical source, but the lines are still there...

    So can you help me solving this ?

    Here's some more info:

    Chassis: S15A
    ICs: TDA8842 S1, TDA8356, SAA5531PS/M4/0298

    I think the vertical source is TDA8356

    Thanks a lot, waiting your reply

    Here's a photo of the chassis: http://store.picbg.net/pubpic/4E/8E/...8713434e8e.JPG
    Last edited by ragis; 03-26-2013, 12:54 PM.
    Tags: None
    • Alastair E
      Chief Womble
      • Mar 2013
      • 1963
      • U.K.
      #2
      Re: Samsung CK-21H1TR

      Do you know if the lines are teletext lines or flyback lines--they are quite different.

      Is the field folded over?

      Are the supplies to the field O/P stage correct?

      What effect does V-lin, Top-lin and height adjustments have?
      TELEFIX

      How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
      http://www.irf.com/technical-info/appnotes/an-1088.pdf
      PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

        Comment

        • ragis
          Senior Member
          • Mar 2013
          • 51
          • Bulgaria
          #3
          Re: Samsung CK-21H1TR

          The lines are flyback, and the field is not folded over.
          I can't tell you the other info(i know it's dumb) because i'm not a specialist and the only thing i have is multimeter and soldering iron... I'm trying to DIY repair my TV.
          Thanks again for the fast reply.

            Comment

            • Alastair E
              Chief Womble
              • Mar 2013
              • 1963
              • U.K.
              #4
              Re: Samsung CK-21H1TR

              Look around the field output stages and there'll be small presets.

              They should be labelled what they do.
              TELEFIX

              How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
              http://www.irf.com/technical-info/appnotes/an-1088.pdf
              PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                Comment

                • ragis
                  Senior Member
                  • Mar 2013
                  • 51
                  • Bulgaria
                  #5
                  Re: Samsung CK-21H1TR

                  Ok, problem solved.It was bad cap C304(22uF/160V).Thanks again

                    Comment

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