toshiba 47ZV650U

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  • shorteddiode
    Badcaps Veteran
    • Apr 2011
    • 221
    • USA

    #1

    toshiba 47ZV650U

    I am getting sound and backlights so I have ruled out the power supply. All the voltages silkscreened on the boards are correct and 12 volts to the t-con.
    As you can tell by the photos the top center seems brighter than the rest of the screen. On video one there is a small thin line running horizontaly and you can see the movie there. On Cable I have snow on the top part of the screen and the lines on the rest. When changing the input mode on the TV you can see it change on the top right of the screen. I read that the t-can can be checked with a scope but it did not say how. I have a 20Mhz and a 100Mhz scope. I would like to know if it's in the main board, the t-con or a bad screen. I did use freeze spray aound the outside edge of the sceen with no change. Tapping on the outside frame of the screen did not change anyhting either. The little ghost picture on the left of the screen is a refelction from the garage window.
    Attached Files
    Last edited by shorteddiode; 08-24-2012, 12:10 PM.
  • killian6pk
    Badcaps Veteran
    • Apr 2010
    • 502
    • USA

    #2
    Re: toshiba 47ZV650U

    Have you checked your fuses on the main board and the TCon? There are probably two on the Main and one near the connector from the main board on the TCon. They are SMT white with gold or silver ends. Pictures of the tv after taking off the back and then of the front and back of the power and main boards would help. Attach them and make sure they are 2000 x 2000 or less. Use the go advanced button below the quick reply and the manage attachments button to load the pictures.
    Have you ever stopped to think and then forget to start thinking again?

    As a very wise man once said on this forum: "Of all the things I have lost I miss my mind the most."

    Comment

    • shorteddiode
      Badcaps Veteran
      • Apr 2011
      • 221
      • USA

      #3
      Re: toshiba 47ZV650U

      Voltages are all good and I checked the voltage on both sides of the fuse on the t-con. All voltages out of the power board are good. I am thinking a bad video processor on the main board. I'll attach more photos later today

      Comment

      • killian6pk
        Badcaps Veteran
        • Apr 2010
        • 502
        • USA

        #4
        Re: toshiba 47ZV650U

        Photos of power board, main board and TCon front and back sized 2000 x 2000 post with the attachments section below the quick reply under Go Advanced.
        Have you ever stopped to think and then forget to start thinking again?

        As a very wise man once said on this forum: "Of all the things I have lost I miss my mind the most."

        Comment

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