Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

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  • mack505
    Member
    • Jul 2011
    • 44
    • US
    #1

    Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

    Sony KDL-55EX501 showing 6 blinks. I replaced the inverter board, when I powered on, I got the sony logo, chime, then a loud buzz, reset, and it repeats twice, then shuts off, gives 6 blinks again.

    The buzz sound appears to be coming from the largest grey component on the D1 board in the pic. Any ideas? (sorry if the pic sucks)
    Attached Files
    Saved - Element 24" LCD TV, Spectre x22wg-Gamer, LG Plasma DU-42PX12XC, Pioneer Plasma PDP-42A3HD, SONY KDL-55EX501
    Tags: None
    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA
      #2
      Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

      That's the inverter transformer. You may have a bad CCFL bulb behind your panel. These transformers get loud when you have s bad bulb or a shorted bulb. Check the soldering underneath that transformer. .
      Did I leave the soldering iron on?

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

          Also make sure the HV connectors are properly seated.
          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

            • mack505
              Member
              • Jul 2011
              • 44
              • US
              #4
              Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

              I re-sat all connectors. Still same. All the soldering under D1 looks ok. Is there a way to determine for sure if one of the bulbs are bad? That would be game over I guess...
              Saved - Element 24" LCD TV, Spectre x22wg-Gamer, LG Plasma DU-42PX12XC, Pioneer Plasma PDP-42A3HD, SONY KDL-55EX501

                Comment

                • mack505
                  Member
                  • Jul 2011
                  • 44
                  • US
                  #5
                  Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                  I opened it up a bit further and all the ccfl bulbs do illuminate when it does its three attempts to start, so those should be ok. Any suggestions where to go from here?
                  Saved - Element 24" LCD TV, Spectre x22wg-Gamer, LG Plasma DU-42PX12XC, Pioneer Plasma PDP-42A3HD, SONY KDL-55EX501

                    Comment

                    • freakaftr8
                      Badcaps Legend
                      • Oct 2012
                      • 3743
                      • USA
                      #6
                      Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                      Are there any burned ends on any of the bulbs? Imbalance of the CCFL's can be an issue. Obviously the transformer is doing its job or they won't light so may not be the issue unless it's arcing internally
                      Did I leave the soldering iron on?

                        Comment

                        • mack505
                          Member
                          • Jul 2011
                          • 44
                          • US
                          #7
                          Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                          I only checked from one end, but they looked ok. Could the D1 components, or board itself be bad?
                          Saved - Element 24" LCD TV, Spectre x22wg-Gamer, LG Plasma DU-42PX12XC, Pioneer Plasma PDP-42A3HD, SONY KDL-55EX501

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA
                              #8
                              Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                              Smell any Ozone? or see any arcing in the dark room?
                              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

                                • mack505
                                  Member
                                  • Jul 2011
                                  • 44
                                  • US
                                  #9
                                  Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                                  Turned it on in a dark room, didn't see any arcing. Not sure what ozone smells like exactly, but I didn't smell anything out of the ordinary...
                                  Saved - Element 24" LCD TV, Spectre x22wg-Gamer, LG Plasma DU-42PX12XC, Pioneer Plasma PDP-42A3HD, SONY KDL-55EX501

                                    Comment

                                    • mack505
                                      Member
                                      • Jul 2011
                                      • 44
                                      • US
                                      #10
                                      Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                                      Replacing D1 board resolved this for me.
                                      Saved - Element 24" LCD TV, Spectre x22wg-Gamer, LG Plasma DU-42PX12XC, Pioneer Plasma PDP-42A3HD, SONY KDL-55EX501

                                        Comment

                                        • dkneyle
                                          Badcaps Veteran
                                          • Dec 2013
                                          • 441
                                          • Australia
                                          #11
                                          Re: Sony SONY KDL-55EX501 6 Blinks, Loud Buzz, Reset

                                          Tell us what the D1 board is? Gives us a hint as to what the failure was.

                                            Comment

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