samsung 50 inch lines on screen

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  • finntricky
    Badcaps Veteran
    • Jan 2014
    • 449
    • uk

    #1

    samsung 50 inch lines on screen

    hi guys
    thinking of buying this tv, what do you think the problem is,
    Attached Files
  • Alastair E
    Chief Womble
    • Mar 2013
    • 1963
    • U.K.

    #2
    Re: samsung 50 inch lines on screen

    Prob control-board....
    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

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #3
      Re: samsung 50 inch lines on screen

      agreed.
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

      Comment

      • finntricky
        Badcaps Veteran
        • Jan 2014
        • 449
        • uk

        #4
        Re: samsung 50 inch lines on screen

        these line come and go, just found out, but still waiting for model number,
        thank you

        Comment

        • Moreno83
          Badcaps Legend
          • Jun 2014
          • 2008
          • The Netherlands

          #5
          Re: samsung 50 inch lines on screen

          Loose contact? When its cold these lines show and when it gets warm/hot they dissapear?
          I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!

          Comment

          • finntricky
            Badcaps Veteran
            • Jan 2014
            • 449
            • uk

            #6
            Re: samsung 50 inch lines on screen

            ok, got it, PS50B451B2W, i'll let you know when ive got it open and had a look

            Comment

            • finntricky
              Badcaps Veteran
              • Jan 2014
              • 449
              • uk

              #7
              Re: samsung 50 inch lines on screen

              had the back off, checked and reseated the ribbon cables, just in case, but still the same.
              the t-con has a led flashing and is a stable flash,
              flash on, then off for a second, then flash on again, is this correct?
              ive ordered another t-con anyway, i should have it buy the end of the week

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #8
                Re: samsung 50 inch lines on screen

                This is OK.

                You could rule the T-con in or out by a quick test.

                On the 4 pin connector, jumper pins 3 & 4.

                Unplug LVDS, when you plug TV in it should jump straight to cycling test patterns.

                If test patterns are bad = definitely control board
                If they are not = more likely main board than control board
                Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

                • finntricky
                  Badcaps Veteran
                  • Jan 2014
                  • 449
                  • uk

                  #9
                  Re: samsung 50 inch lines on screen

                  yep, tryed that TOM, and still the same lines on screen while running test.
                  so defo t-con at fault

                  Comment

                  • finntricky
                    Badcaps Veteran
                    • Jan 2014
                    • 449
                    • uk

                    #10
                    Re: samsung 50 inch lines on screen

                    got the t-con today and fitted, think its dead, the led flashes the same but tv will not prime or show pic ?
                    is there somethink i have to do, to marry the t-con to the av board ?
                    im confused.

                    Comment

                    • Shinju
                      Badcaps Legend
                      • Mar 2014
                      • 1239
                      • USA

                      #11
                      Re: samsung 50 inch lines on screen

                      double check your connections, sometimes a misaligned ribbon cable will cause issues!

                      Comment

                      • finntricky
                        Badcaps Veteran
                        • Jan 2014
                        • 449
                        • uk

                        #12
                        Re: samsung 50 inch lines on screen

                        ok, found out what the problem is, stupid mistake, all part and pcb numbers match, but turns out it;s for the 42" model, and it has a different chip.
                        theres a lesson to learn.

                        Comment

                        • sordids999
                          Badcaps Legend
                          • May 2013
                          • 2152
                          • uk

                          #13
                          Re: samsung 50 inch lines on screen

                          whats the LJ41 LJ92 number i might have one laying around

                          Comment

                          • finntricky
                            Badcaps Veteran
                            • Jan 2014
                            • 449
                            • uk

                            #14
                            Re: samsung 50 inch lines on screen

                            lj41-05903a

                            Comment

                            • flocko
                              Badcaps Legend
                              • Nov 2012
                              • 1121
                              • uk

                              #15
                              Re: samsung 50 inch lines on screen

                              The LJ41-xxxxxx number is the board pattern number, the part number is all ways the
                              LJ92-xxxxx number and the only one to go by to be sure of getting the right board for you set Flocko

                              Comment

                              • finntricky
                                Badcaps Veteran
                                • Jan 2014
                                • 449
                                • uk

                                #16
                                Re: samsung 50 inch lines on screen

                                UPDATE
                                replaced t-con.
                                tv now up and running, thanks guys,
                                now on to my next one LG 50PS3000
                                Attached Files

                                Comment

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