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Baird T16509DLEDDS 65" UHD TV

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    Baird T16509DLEDDS 65" UHD TV

    Friend has asked me to look at a Baird T16509DLEDDS

    When plugged in, red standby light comes on, press power and green light comes on, but get nothing apart from that.
    With back removed, there is a blue LED illuminated on the small network/wifi board (if thats what it is called lol)

    I have tested the voltages coming from power board, and all seem ok, except dont get any readings for the power to the backlights, whether backlights are plugged in or not, is this normal?

    Any suggestions what to try next, or any know issues much appreciated
    Attached Files

    #2
    Re: Baird T16509DLEDDS 65" UHD TV

    If all the supply voltages are normal, then the firmware may have crashed, if there is a programmer, then you can merge the contents (Dump) and put it here, I'll take a look and if it's not working, then I'll fix it.
    Attached Files

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      #3
      Re: Baird T16509DLEDDS 65" UHD TV

      Originally posted by lotas View Post
      If all the supply voltages are normal, then the firmware may have crashed, if there is a programmer, then you can merge the contents (Dump) and put it here, I'll take a look and if it's not working, then I'll fix it.
      I am unable to do that Im afraid :/

      Comment


        #4
        Re: Baird T16509DLEDDS 65" UHD TV

        So, no picture on screen with flashlight? What is voltage across main capacitor?
        I assume no responsibility for any stupid suggestions I might post.

        Comment


          #5
          Re: Baird T16509DLEDDS 65" UHD TV

          Originally posted by dskall View Post
          So, no picture on screen with flashlight? What is voltage across main capacitor?
          Yes there is picture with flashlight

          Main cap voltages are 390v

          I have a suspicion its the backlights at fault, however I dont really want to pull the screen if I dont have to being a 65", thats why I was asking when testing votages on the PB, should i get voltage where the backlights plug into?

          Comment


            #6
            Re: Baird T16509DLEDDS 65" UHD TV

            If you have a picture when using a flashlight, 99% of the time it’s the backlights that are bad

            Comment


              #7
              Re: Baird T16509DLEDDS 65" UHD TV

              When turning on tv you should get a voltage rise on the led pins.
              I assume no responsibility for any stupid suggestions I might post.

              Comment


                #8
                Re: Baird T16509DLEDDS 65" UHD TV

                Originally posted by dskall View Post
                When turning on tv you should get a voltage rise on the led pins.
                Cheers m8, I was doing it wrong, I was turning TV on then testing voltage afterwards

                Comment


                  #9
                  Re: Baird T16509DLEDDS 65" UHD TV

                  Originally posted by Storyteller12 View Post
                  If you have a picture when using a flashlight, 99% of the time it’s the backlights that are bad
                  Yeah I know m8, was just throwing me off that I wasnt getting backlight voltage from PB, but I was testing incorrectly

                  Comment


                    #10
                    Re: Baird T16509DLEDDS 65" UHD TV

                    Problem solved, backlight failure, thankyou everyone

                    Comment

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