Sony KD-49XF809y doesn't turn on

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  • Zetabeta87
    New Member
    • Nov 2024
    • 7
    • Italia
    #1

    Sony KD-49XF809y doesn't turn on

    Hi everyone!
    I have a 2018 Sony kd 49XF8096 that suddenly stopped turning on: No LED lights up, and it doesn't respond to the power button or the remote control.
    The power supply delivers 19.45vand I simply tried to check the fuses on the 2 boards (power and main) but everything seems ok. I have no references on where to test the voltage, but somewhere on the mainboard I also detect some, so you can't to understand which card may be to blame.
    Can anyone give me some advice? I haven't found anything online

    Thanks so much!!!
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    • Gjackson
      Senior Member
      • Aug 2021
      • 134
      • Malta
      #2
      Hi!

      Do you get a standby light? I would start by checking if the PSU outputs 19.45v when it is plugged into the board, from the connector on the small power PCB.

      Next If it is present I would check the voltage on those 3 inductors, the grey box looking things on the small PCB

        Comment

        • Zetabeta87
          New Member
          • Nov 2024
          • 7
          • Italia
          #3
          No, none of the LEDs light up. I checked and the voltage even when connected remains at 19.4v (connector pin under the PCB).
          Testing inductors pin to gnd I get, respectively each pin: 19.4-19.4v, 19.4-19.4v and 12.5-6v (lower-right one, near the writing).

            Comment

            • Zetabeta87
              New Member
              • Nov 2024
              • 7
              • Italia
              #4
              I haven't found the solution yet, without intervening on the card I'll replace it and I'm thinking about the mainboard but I'm not sure it's the one, does anyone have any advice?

                Comment

                • zomi
                  Badcaps Veteran
                  • Nov 2011
                  • 505
                  #5
                  Most likley the main board.. emmc gone..
                  You can check for voltages around the emmc .. they should be there.. but corrupted emmc not letting it work

                    Comment

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