Kdl-40v3000 1 red blink then back to green

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  • mattstolte
    Badcaps Veteran
    • Dec 2013
    • 612
    • usa

    #1

    Kdl-40v3000 1 red blink then back to green

    Ok so i got this tv and when i press power the green light comes on but no picture, then after about 30 seconds it will flash 1 red blink the go back to solid green but still nothing, any ideas?
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Kdl-40v3000 1 red blink then back to green

    Solid green sounds like it is turning on normally.

    No backlight? Any sound?

    Pictures of the TV boards?

    Have you checked if your PSU is outputting OK voltages? Most SONYs have outputs labelled.

    Check for 24V & BL ON at inverter...
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • mattstolte
      Badcaps Veteran
      • Dec 2013
      • 612
      • usa

      #3
      Re: Kdl-40v3000 1 red blink then back to green



      i checked the vcc on inverter says 12v on meter. So think inverter is bad?
      Attached Files

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: Kdl-40v3000 1 red blink then back to green

        This uses a high voltage inverter - you cannot check it with a meter. Did you check BL ON and BL ERR (if present?)
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • mattstolte
          Badcaps Veteran
          • Dec 2013
          • 612
          • usa

          #5
          Re: Kdl-40v3000 1 red blink then back to green

          [=tom66;451126]This uses a high voltage inverter - you cannot check it with a meter. Did you check BL ON and BL ERR (if present?)[/QUOTE]

          i cant seem to find them tom, they would be located on power supply correct?

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: Kdl-40v3000 1 red blink then back to green

            Yes but they could be variously labelled ON/OFF, BLON, INV_ON, etc. For now just locate backlight on signal.
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

            • mattstolte
              Badcaps Veteran
              • Dec 2013
              • 612
              • usa

              #7
              Re: Kdl-40v3000 1 red blink then back to green

              i have balancer, inverter err, nothing that says on, also on my main board i have a little orange light that is blinking non stop then it will stay on then blink, it makes weird non pattern blinks

              Comment

              • mattstolte
                Badcaps Veteran
                • Dec 2013
                • 612
                • usa

                #8
                Re: Kdl-40v3000 1 red blink then back to green

                i mean if it was inverter i should be able to flash light to see menu or something, i see nothing

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #9
                  Re: Kdl-40v3000 1 red blink then back to green

                  Not applicable to all panels, especially these newer ones with a strong anti-reflective coating on the panel. (Reflects panel light easily.)
                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                  Comment

                  • dboy
                    Member
                    • May 2014
                    • 20
                    • philippines

                    #10
                    Re: Kdl-40v3000 1 red blink then back to green

                    Hi,
                    we have the same tv model, I attached the service manual for your reference.
                    Attached Files

                    Comment

                    • mattstolte
                      Badcaps Veteran
                      • Dec 2013
                      • 612
                      • usa

                      #11
                      Re: Kdl-40v3000 1 red blink then back to green

                      dboy thank you, I have never looked at a service manual before, is there a page I can locate the circuit boards and there voltages? so I can test all pins?

                      Comment

                      • dboy
                        Member
                        • May 2014
                        • 20
                        • philippines

                        #12
                        Re: Kdl-40v3000 1 red blink then back to green

                        you can find the schematic in the service manual except for the tcon. I am not an expert in troubleshooting LCD TV, I am also asking help here, My tv (same model) is also for repair and experts of this site is helping me.

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA

                          #13
                          Re: Kdl-40v3000 1 red blink then back to green

                          This is the training manual, you may want to read it first.
                          Attached Files
                          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

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