Sony XBR-65Z9D won't turn on after lighting strike

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  • Highvoltagerchelie
    New Member
    • Nov 2023
    • 6
    • United States
    #1

    Sony XBR-65Z9D won't turn on after lighting strike

    Good afternoon. I found this forum as I was looking for troubleshooting information for my Sony z9d. A lightning strike hit very close to the house and did nearly $30,000 in electronics damage. The TV appears completely dead with no status light and no picture. I found the Sony XBR-65Z9D service manual and followed the troubleshooting steps on Pages 21-26. All checks seem normal except DC_OFF_DET check on Page 23 R420 voltage was slightly higher than 3V. It was 3.475V and C418 was slightly higher that the 5V at 5.3V.

    I proceeded to check the Power Board CN6401 connector. With all cables connected I have standby Voltage, Power On Voltage and all 12V when I plug in the TV. I do not have T_CON ON 3.3Volts nor do I have T_Con 12Volts. I disconnected all cables and provided a jumper from StandyBy Volts 3.3 to Power On and to T_Con On. T_Con 12 has 12V output now.

    I'm at a loss. I think its the BM2 board that has the fault, but not sure. Can you assist? I'm comfortable making all checks. I would like to repair at component level if possible.

    Thank you for your help!

    Click image for larger version Name: IMG_2513.jpg Views: 2 Size: 2.99 MB ID: 3155803 Click image for larger version Name: IMG_2511.jpg Views: 2 Size: 2.92 MB ID: 3155804 Click image for larger version Name: IMG_2514.jpg Views: 2 Size: 3.24 MB ID: 3155805
    SONY XBR-65Z9D SERVICE MANUAL Pdf Download
    https://www.manualslib.com
    View and Download Sony XBR-65Z9D service manual online. GN2TR CHASSIS. XBR-65Z9D lcd tv pdf manual download.
    Tags: None
    • Highvoltagerchelie
      New Member
      • Nov 2023
      • 6
      • United States
      #2
      Pictures are attached in the post, but I can't see them.

        Comment

        • EazyBone
          Badcaps Legend
          • Jun 2023
          • 1321
          • United states
          #3
          Lightning usually destroys the PSU or the main board in my research. The PSU has all correct voltages, so clearly the PSU can be ruled out. Likely your main board is busted now. If you had hdmis plugged into it or anything else plugged in, the lightning could have crept through those cords and popped the main board. Check for shorts all around the HDMI ports or whatever you had plugged in. Maybe something is burned by those ports.

          TCON on will occur when main board sends signal and since you jump tested then you should be all good. I assume you have voltages going to the LED driver board also right?

          And any voltage on the tcon fuse when plugged in on stby?


            Comment

            • Highvoltagerchelie
              New Member
              • Nov 2023
              • 6
              • United States
              #4
              I'm not sure which board is the LED driver board. I haven't removed the steel plate over the TCon board. I will check. Thank you.

                Comment

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