Sony Bravia KDL-46VL160 Turns off after a few seconds

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  • gingerbreadman
    Member
    • Sep 2013
    • 36
    • United States
    #1

    Sony Bravia KDL-46VL160 Turns off after a few seconds

    I just picked up a 46" Sony Bravia KDL-46VL160. It turns on for a few seconds,
    the backlight turns on but there is no actual picture.
    When the set turns itself off the red light blinks 14 times.

    I'm just getting started troubleshooting this one, I've read it could be a backlight tube,
    maybe a bad transformer or a TCON issue.
    What are your thoughts to check first?
    Attached Files
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Sony Bravia KDL-46VL160 Turns off after a few seconds

      TCON or HFR (12X 14X)
      A communication error has occured from the TCON board. If the LVDS cable is not defective or loose both conditions require the replacement of the LCD panel.
      14x = HIGH FRAME RATE ERROR
      12x = TCON ERROR

      At least check the fuse on the T-CON board.

      http://elektrotanya.com/?q=showresul...oria=&kat2=all
      May be close enough to your model.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • gingerbreadman
          Member
          • Sep 2013
          • 36
          • United States
          #3
          Re: Sony Bravia KDL-46VL160 Turns off after a few seconds

          One more thing I should mention. When the power cord is plugged in it automatically turns itself on, the backlight comes on and then it turns itself off.

            Comment

            • gingerbreadman
              Member
              • Sep 2013
              • 36
              • United States
              #4
              Re: Sony Bravia KDL-46VL160 Turns off after a few seconds

              I unplugged the LVDS cable going into the T-CON board and then the backlight stays on and the tv doesn't shut itself off.

                Comment

                • gingerbreadman
                  Member
                  • Sep 2013
                  • 36
                  • United States
                  #5
                  Re: Sony Bravia KDL-46VL160 Turns off after a few seconds

                  Is there a bulb/tube that can be replaced? Or is the whole lcd panel just bad?

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA
                      #6
                      Re: Sony Bravia KDL-46VL160 Turns off after a few seconds

                      Since the backlights stay on, then it is not inverter or lamps problem. The error already indicate the problem with the T-CON board.
                      Never stop learning
                      Basic LCD TV and Monitor troubleshooting guides.
                      http://www.badcaps.net/forum/showthr...956#post305956

                      Voltage Regulator (LDO) testing:
                      http://www.badcaps.net/forum/showthr...999#post300999

                      Inverter testing using old CFL:
                      http://www.badcaps.net/forum/showthr...er+testing+cfl

                      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                      http://s807.photobucket.com/user/budm/library/

                      TV Factory reset codes listing:
                      http://www.badcaps.net/forum/showthread.php?t=24809

                        Comment

                        • rustytierod
                          Senior Member
                          • Sep 2014
                          • 81
                          • USA
                          #7
                          Re: Sony Bravia KDL-46VL160 Turns off after a few seconds

                          I am having similar problem with 46v5100. TV does not turn itself on when plugged in, still turns off and backlight still comes on for 2 seconds when LVDS cable is disconnected with no disturbance in image.

                          No error blinks. TV still turns on for same amount of time and clicks off with only main and power connected.

                            Comment

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