Sony XBR-65X850D

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  • dprit
    Member
    • Jul 2015
    • 49
    • USA

    #1

    Sony XBR-65X850D

    Customer brought in this dead Sony. I narrowed it down to a bad main. After replacing it, the front LED power light was flashing red and Green. When it stayed red, I turned it on and have no BL's but do have the music loop that will go up and down with remote but no BL's or osd.The power light is white but no picture. Why no BL's? And when I powered it off, there is no power light on the front.
  • EazyBone
    Badcaps Legend
    • Jun 2023
    • 1347
    • United states

    #2
    Do you have picture but no BL? Did you take flashlight to screen when you hear the sound and turn it on?

    Comment

    • Davi.p
      Hobbist Tech
      • Sep 2009
      • 4363
      • Italy - Milan

      #3
      Does TCON have a direct connection with a backlight driver? If yes remember that MB must be paired to TCON..

      Comment

      • dprit
        Member
        • Jul 2015
        • 49
        • USA

        #4
        I tried the flashlight test but did not see any video. How can the main be paired to the TCON if you can't see the screen?

        Comment

        • Storyteller12
          Badcaps Veteran
          • Jun 2020
          • 624
          • USA

          #5
          Did you do an update with usb after changing main board?
          it’s required most of the time to pair the tcon and main board.

          Comment

          • Davi.p
            Hobbist Tech
            • Sep 2009
            • 4363
            • Italy - Milan

            #6
            you can try this..
            Download upgrade, rename it in same folder as "upgrade_loader.pkg", put it in pendrive and then in tv, plugging the power in when keep pressing ON button on the tv
            brings to a state with blue led steady in standby position, releasing the button and pressing it again brings to a pulsating white led, wait pendrive led to stop after few
            pulses, removed power, reinsert it, white led does 3 - pause - 7 pulses, then turn it on with normal key, tv turns on with backlight an maybe an image..

            Comment

            • dprit
              Member
              • Jul 2015
              • 49
              • USA

              #7
              Sony has quit providing the updates for this model. Where else can I get the updates?

              Comment

              • Diah
                Badcaps Legend
                • Feb 2013
                • 6395
                • Germany

                #8
                since its android... try hard reset you release the pressing only after the front LED change from white to green

                Comment

                • lotas
                  Badcaps Legend
                  • Jan 2016
                  • 4649
                  • Russia

                  #9
                  Your TV needs the update version "sony_tvupdate_2015_5435_eua_auth".
                  Attached Files

                  Comment

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