Sony KDL-32ex301 Backing Issue 6 flashing Red

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  • smiddy1980
    HELLLLLP
    • Sep 2014
    • 57
    • Scotland

    #1

    Sony KDL-32ex301 Backing Issue 6 flashing Red

    Sony Briva KDL-32ex301

    Hi I have a faulty Sony KDL-32 the problem is when I power it up the screen comes one for a few or 2 then goes off and I get 6 flashing red lights. The 6 Flashing lights refer to the inverter board, so I got a new inverter board but still the same issue. when I use a jumper wire to turn the PSU on I get 24 volt to the Inverter all good, when I plug the Main board in I get 3.3v to the BL_On for a sec or 2 just the same time, I get this when the inverter is plugged in or not, so it looks like the main board is turning the black light off, question is do you think this is a Main board issue, or will the Mainboard turn the BL off if it does not see the inverter drawing power?

    Thanks Guys
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

    The main board is the one that sends out the BL-ON signal. You may try removing the cable to the T-CON board to see what happen.
    When you force on the power supply, you can also try forcing on the backlights too WITH RESISTORS, I do not do force on without using the resistors, especially if you forget to remove the cables going back to the main board first, you can damage the switched transistors on the main board if you do not.
    Pictures of the whole backside of the TV and the boards will help.
    Last edited by budm; 10-23-2015, 07:48 AM.
    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

    • smiddy1980
      HELLLLLP
      • Sep 2014
      • 57
      • Scotland

      #3
      Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

      Thanks for the replay

      Ok So why I unplug the Ribon cable I get 7 flashes and the back light does not come on,

      When I short PN 1(3.3V Stby), 3(On) and 11(BL_On) the black light coms on for a second the goes off, the 25v I was getting at the Inverter goes to goes to 0v, so I gues its not the Mianboard, PSU? all the caps look ok on the PSU and the voltages are good

      can you think of anything I can test or change on the Mianboard ?
      Attached Files

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

        Once you disconnect the cable between the power supply board and the main board and then used the force on resistors between STBY supply pin and the ON, BL-ON, and may be also the DIM pin, the backlights should stay on, if the inverter draws too much current then the 24V may go into shutdown.
        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

        • smiddy1980
          HELLLLLP
          • Sep 2014
          • 57
          • Scotland

          #5
          Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

          thanks

          OK So when the Inverter is connected to the PSU and not the screen I get 25v always when I connect the inverter to the back light the voltage goes to 0, so it could be the back lights its self? is this for the bin or can the BL be changed ?

          Comment

          • smiddy1980
            HELLLLLP
            • Sep 2014
            • 57
            • Scotland

            #6
            Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

            sorry I just done some more testing there and I am getting 25v to the inverter even tho the backlight is off

            so it looks like the inverter, but I git another and the boy told me it was working, is there anyway to test the inverter ?

            Thanks

            Comment

            • smiddy1980
              HELLLLLP
              • Sep 2014
              • 57
              • Scotland

              #7
              Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

              getting 1.1v on the BL_Er

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                You can check the resistance of the secondary side of the inverter transformer windings to see if they are with 3% from each other.
                I cannot read the P/N of the inverter board, the one printed on the board and theone printed on the barcode sticker, and also the P/N as printed on the inverter transformer.
                Is this your Samsung LJ97-02545A (SSI30-4UG01) Backlight Inverter?

                Picture provided by SHOPJIMMY.
                Attached Files
                Last edited by budm; 10-23-2015, 11:22 AM.
                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

                • smiddy1980
                  HELLLLLP
                  • Sep 2014
                  • 57
                  • Scotland

                  #9
                  Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                  yes that the one

                  Comment

                  • smiddy1980
                    HELLLLLP
                    • Sep 2014
                    • 57
                    • Scotland

                    #10
                    Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                    Board ss1320_4UG01
                    Sticker 0254ATA298804D1
                    TRANSFORMER S32056 1077

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                      OK, check the resistance between:
                      A & B
                      C & D
                      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

                      • smiddy1980
                        HELLLLLP
                        • Sep 2014
                        • 57
                        • Scotland

                        #12
                        Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                        So the TOP Transformer (setting on Multi 200M)
                        A-B 1.1 M Ohms
                        C-D 2.0 M Ohms

                        Bottom Transformer

                        A-B 1.1 M Ohms
                        C-D 2.0 M Ohms
                        Last edited by smiddy1980; 10-23-2015, 02:01 PM.

                        Comment

                        • smiddy1980
                          HELLLLLP
                          • Sep 2014
                          • 57
                          • Scotland

                          #13
                          Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                          on the second board I have for both top and bottom

                          A-B 1.1
                          C-D 1.2

                          Comment

                          • smiddy1980
                            HELLLLLP
                            • Sep 2014
                            • 57
                            • Scotland

                            #14
                            Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                            My Board looks like is has more feet on the transformer than the one in the pic
                            Attached Files

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #15
                              Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                              There are 4 legs on one side of the transformer as shown in my picture. Those 4 legs are for two pair of windings.
                              Last edited by budm; 10-23-2015, 02:06 PM.
                              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

                              • budm
                                Badcaps Legend
                                • Feb 2010
                                • 40746
                                • USA

                                #16
                                Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                                Originally posted by smiddy1980
                                on the second board I have for both top and bottom

                                A-B 1.1
                                C-D 1.2
                                What do you mean on the second board?
                                BTW, those reading are in Ohms, K Ohms, or M Ohms?
                                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

                                • smiddy1980
                                  HELLLLLP
                                  • Sep 2014
                                  • 57
                                  • Scotland

                                  #17
                                  Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                                  sorry about that

                                  They are all 0.9 M Ohms

                                  Comment

                                  • budm
                                    Badcaps Legend
                                    • Feb 2010
                                    • 40746
                                    • USA

                                    #18
                                    Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                                    Originally posted by smiddy1980
                                    sorry about that

                                    They are all 0.9 M Ohms
                                    Are you sure? that is 900,000 Ohms!
                                    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

                                    • smiddy1980
                                      HELLLLLP
                                      • Sep 2014
                                      • 57
                                      • Scotland

                                      #19
                                      Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                                      This is what it says on the meter, Sorry learning every day
                                      Attached Files

                                      Comment

                                      • budm
                                        Badcaps Legend
                                        • Feb 2010
                                        • 40746
                                        • USA

                                        #20
                                        Re: Sony KDL-32ex301 Backing Issue 6 flashing Red

                                        You do read it correctly, may be I am wrong about the pin out of the transformer. I cannot find much info on this transformer to verify the pin outs.
                                        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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