Sony KDL-55HX850 - Blinking 3x

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  • CSM123
    New Member
    • Feb 2024
    • 2
    • United States
    #1

    Sony KDL-55HX850 - Blinking 3x

    Have KDL-55HX850 that seems to have been hit by power surge.

    Blinking red 3x - clicks on/off on the power supply board when power is held in.
    Replaced Power Supply G board - same response.
    Replaced main BAP - no response at all. Seems worse, maybe bad board.
    Replaced main BAP with a 2nd board - back to blinking 3x similar to original.

    Checked speaker impedances ok 8ohms each.

    Where are JL6002, JL6005 test points?

    Ideas for what next to troubleshoot?

    Could it be T-Conn or LED board? Seems that the troubleshooting
    guide is focused on G or BAP for this 3x blinking.

    Click image for larger version Name: Screenshot 2024-02-06 at 12.46.15 PM.png Views: 411 Size: 245.4 KB ID: 3211528
    Tags: None
    • Davi.p
      Hobbist Tech
      • Sep 2009
      • 4313
      • Italy - Milan
      #2
      Disconnect the tcon or frc or other boards and check again

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