Sony KDL-55W905A blink code

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  • PowerAmpFreak
    Badcaps Veteran
    • Feb 2010
    • 977
    • Sweden

    #1

    Sony KDL-55W905A blink code

    Hello
    Tried to find the meaning of those three blinks. Cannot locate any tech docs for this model.
    It's a Sony KDL-55W905A blinks in a sequence of three blinks and pause.
    PSU "seems" to generate the correct voltages, the most obvious are there though.
    Two pics attached.
    Any advice is appreciated!
    Attached Files
  • anmol
    Senior Member
    • Mar 2012
    • 73
    • India

    #2
    Re: Sony KDL-55W905A blink code

    Pls. post clear photo both side of each pcb.

    check with this chart, if you have same board.

    wbr
    Attached Files

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12085
      • U.S.

      #3
      Re: Sony KDL-55W905A blink code

      a bit about overheating of the w series. https://answers.yahoo.com/question/i...9051004AAwVs6w

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12085
        • U.S.

        #4
        Re: Sony KDL-55W905A blink code

        some more, could be an audio issue. 3 BLINKS

        The first thing to check when a 3X blink protection mode occurs is the physical condition of the speakers and speaker connections. The speakers should measure 8 ohms. Shorted speakers or connections can cause a 3X blink protection mode.
        If the speakers and connections check okay, then the defective component is on the main board. Either an open F4200, defective DC regulator or defective audio amplifier will cause a 3X blink protection mode which would require replacing the main board.
        A defect on the Power Supply Board may also cause a 3X blink protection mode and shut-off. Check the AU12V level at CN6704/pin 14. If 0V is measure before shut-off the power supply board needs to be replaced.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12085
          • U.S.

          #5
          Re: Sony KDL-55W905A blink code

          https://cdn.badcaps-static.com/pdfs/...2fac704e9b.pdf

          Comment

          • PowerAmpFreak
            Badcaps Veteran
            • Feb 2010
            • 977
            • Sweden

            #6
            Re: Sony KDL-55W905A blink code

            Thanx for advice, will dig deeper into this and let you know my findings!

            Comment

            • PowerAmpFreak
              Badcaps Veteran
              • Feb 2010
              • 977
              • Sweden

              #7
              Re: Sony KDL-55W905A blink code

              Originally posted by anmol
              Pls. post clear photo both side of each pcb.

              check with this chart, if you have same board.

              wbr
              This guide points towards a defective mainboard.

              Comment

              • RJARRRPCGP
                Badcaps Legend
                • Jul 2004
                • 6301
                • USA

                #8
                Re: Sony KDL-55W905A blink code

                Random DNS error. But fine now.
                ASRock B550 PG Velocita

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                Comment

                • budm
                  Badcaps Legend
                  • Feb 2010
                  • 40746
                  • USA

                  #9
                  Re: Sony KDL-55W905A blink code

                  That PDF is for CRT TV: they are old info, not for LCD TV!

                  "FOUR Blinks
                  ---
                  No Vert. Deflection (V STOP), Screen goes to a single
                  horizontal
                  line then the video signal muted. Check IC1509, Q1505"

                  SIX Blinks
                  ---
                  No Horizontal (H STOP), no raster, goes to the blinking self
                  -
                  diagnosis function immediately. Check C515
                  & 516 and the jungle IC, IC206.

                  SEVEN Blinks
                  ---
                  High voltage shutdown. The high voltage has exceeded 33k

                  and the unit goes immediately into safety shutdown. Check power supply
                  regulation and horizontal circuits.
                  Last edited by budm; 02-16-2015, 06:20 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

                    #10
                    Re: Sony KDL-55W905A blink code

                    Originally posted by anmol
                    Pls. post clear photo both side of each pcb.

                    check with this chart, if you have same board.

                    wbr
                    Do you have the link to download the full service manual for this model?
                    Elektrotanya does not have this one.
                    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

                    • PowerAmpFreak
                      Badcaps Veteran
                      • Feb 2010
                      • 977
                      • Sweden

                      #11
                      Re: Sony KDL-55W905A blink code

                      Hello
                      I ordered a brand new mainboard for this one.
                      When starting up the blinking goes between green and yellow constantly.
                      I suspect it might need a FW download, probably through USB.
                      Anyone know if this is correct and how I do this?

                      Comment

                      • PowerAmpFreak
                        Badcaps Veteran
                        • Feb 2010
                        • 977
                        • Sweden

                        #12
                        Re: Sony KDL-55W905A blink code

                        According to Anmol's troubleshooting chart (post #2) a blinking green led is most likely defective LCD panel.....

                        Measuring the VLED output, it goes from +39V in standby to only +43V when on. I would assume a higher voltage.
                        The e-lyte for Vled is 100V 100uF.
                        The +43V is there even if disconnecting led panel.
                        Last edited by PowerAmpFreak; 03-11-2015, 12:21 PM.

                        Comment

                        • PowerAmpFreak
                          Badcaps Veteran
                          • Feb 2010
                          • 977
                          • Sweden

                          #13
                          Re: Sony KDL-55W905A blink code

                          Anyone have access to service manual for Sony KDL-55W905A ?
                          I certainly need it badly!!

                          Thanx in advance!

                          Comment

                          • anmol
                            Senior Member
                            • Mar 2012
                            • 73
                            • India

                            #14
                            Re: Sony KDL-55W905A blink code

                            Originally posted by PowerAmpFreak
                            Hello
                            I ordered a brand new mainboard for this one.
                            When starting up the blinking goes between green and yellow constantly.
                            I suspect it might need a FW download, probably through USB.
                            Anyone know if this is correct and how I do this?
                            You have update FW ?

                            Try first update FW with USB,

                            WBR

                            Comment

                            • anmol
                              Senior Member
                              • Mar 2012
                              • 73
                              • India

                              #15
                              Re: Sony KDL-55W905A blink code

                              Originally posted by budm
                              Do you have the link to download the full service manual for this model?
                              Elektrotanya does not have this one.

                              Sorry for late reply.
                              i have Sony chasis RB1G manual

                              MODEL LIST
                              THIS SERVICE MANUAL CONTAINS COMMON INFORMATION FOR BELOW REGIONS AND MODELS:
                              REGION
                              ASIA CHINA AMERICA JAPAN EUROPE ASIA CHINA AMERICA JAPAN EUROPE
                              MODEL
                              KDL-42W800A KDL-47W800A KDL-55W800A
                              KDL -42W801A KDL -47W801A KDL - 55W801A KDL -42W801A KDL -47W801A KDL - 55W801A
                              KDL-42W802A KDL-47W802A KDL-55W802A
                              KDL-42W804A KDL-47W804A KDL-55W804A
                              KDL-42W805A KDL-47W805A KDL-55W805A
                              KDL-42W807A KDL-47W807A KDL-55W806A
                              KDL-42W808A KDL-47W808A KDL-55W807A
                              KDL-42W809A KDL-47W809A KDL-55W808A
                              KDL 55W809 A KDL - 55W809 A

                              Not Schematic.
                              Size is 57,8 MB

                              wbr

                              Comment

                              • PowerAmpFreak
                                Badcaps Veteran
                                • Feb 2010
                                • 977
                                • Sweden

                                #16
                                Re: Sony KDL-55W905A blink code

                                Originally posted by anmol
                                You have update FW ?

                                Try first update FW with USB,

                                WBR
                                I tried to update FW through USB stick. It does not respond.
                                Not any sign of updating whatsoever.
                                Led blink green / orange continously in an endless loop.
                                The backlight is briefly turned on when power up, but shuts down after half a second.

                                Comment

                                • PowerAmpFreak
                                  Badcaps Veteran
                                  • Feb 2010
                                  • 977
                                  • Sweden

                                  #17
                                  Re: Sony KDL-55W905A blink code

                                  According to service manual:

                                  Error of panel ID Off Green Blinking Orange
                                  Blinking
                                  Blinking:0.5sec On / 0.5sec

                                  ...indicates a state of Error of panel ID. So what next?
                                  Where are the panel ID stored? T-CON?
                                  Last edited by PowerAmpFreak; 03-15-2015, 05:14 AM.

                                  Comment

                                  • anmol
                                    Senior Member
                                    • Mar 2012
                                    • 73
                                    • India

                                    #18
                                    Re: Sony KDL-55W905A blink code

                                    your new mainboard is same code ? i think this is MB problem. bcoz your mb dosn't update with usb. when we replace mb it need to update.

                                    wbr

                                    Comment

                                    • PowerAmpFreak
                                      Badcaps Veteran
                                      • Feb 2010
                                      • 977
                                      • Sweden

                                      #19
                                      Re: Sony KDL-55W905A blink code

                                      OK. So how will I update then?

                                      Comment

                                      • PowerAmpFreak
                                        Badcaps Veteran
                                        • Feb 2010
                                        • 977
                                        • Sweden

                                        #20
                                        Re: Sony KDL-55W905A blink code

                                        Anmol, I did succeed to enter service menu according to instructions on page 214 (SM)
                                        I also did a picture test of different bars and colours and it all looks OK.
                                        On page 216 the behaviour is described, frontled is blinking green / amber.
                                        It is smart core waiting for USB with software. Here nothing happens.
                                        The software on the USB stick is the one I found on Sony website, but I do not know if it requires some bootloader before the main application FW can be written?

                                        Comment

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