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Sony Kdl-55ex721 double image

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    Sony Kdl-55ex721 double image

    Hello all, i just received this led tv with double image, but am confuse on which point to cut, here is the pictures of the T-con and image of the fault, can anyone please show me with picture
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    #2
    Re: Sony Kdl-55ex721 double image

    you don't cut any of those... you use a piece of tape and place it on a set of contacts at the tcon board on a connector going from the tcon to the panel. This basically acts as a "cutoff" of signals that go to the panel which then might help get a better picture. This process is "trial and error" but because you are using a piece of tape, it causes no long term problems and can be repeated as often as necessary. Cutting those cables picture is a permanent one time thing and is a BIG GAMBLE.... don't do it.

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      #3
      Re: Sony Kdl-55ex721 double image

      Cut signals ckv1-ckv2-ckvb1-ckvb2-stvp on lcd board

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        #4
        Re: Sony Kdl-55ex721 double image

        Originally posted by DIMITRIO View Post
        Cut signals ckv1-ckv2-ckvb1-ckvb2-stvp on lcd board
        yes i know i need to cut, but my challenge is i can not identify which of the point is the cvk1 ckvb1 and so on, that is my challenge, if anyone can show me i will be grateful

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          #5
          Re: Sony Kdl-55ex721 double image

          Originally posted by hispeck View Post
          Hello all, i just received this led tv with double image, but am confuse on which point to cut, here is the pictures of the T-con and image of the fault, can anyone please show me with picture
          ok, can you show me which end to insulate ?

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            #6
            Re: Sony Kdl-55ex721 double image

            Originally posted by DIMITRIO View Post
            Cut signals ckv1-ckv2-ckvb1-ckvb2-stvp on lcd board
            What are you talking about?

            How do you know that cutting these signals will fix this TV? Where did you get this information? Not doubting you, but I am curious because I have never heard of this fix for such an issue before.

            Please share your information or source.

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              #7
              Re: Sony Kdl-55ex721 double image

              What is the LCD panel model number? T-CON P/N?
              The tape off method is to tape off the pin to the COF GATE drive.
              Last edited by budm; 03-01-2019, 12:31 PM.
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

              Comment


                #8
                Re: Sony Kdl-55ex721 double image

                Originally posted by Unspun01 View Post
                What are you talking about?

                How do you know that cutting these signals will fix this TV? Where did you get this information? Not doubting you, but I am curious because I have never heard of this fix for such an issue before.

                Please share your information or source.
                I finally fixed the tv by cutting ckv2 and ckvb2 on the left side panel, tv working very fine now.

                Comment


                  #9
                  Re: Sony Kdl-55ex721 double image

                  Nice job, did you get a picture of your cuts to show us?
                  Last edited by nomoresonys; 03-02-2019, 02:18 PM.

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