Sony KDL-46ex520

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  • nomoresonys
    Badcaps Legend
    • Jan 2013
    • 12330
    • U.S.

    #21
    Re: Sony KDL-46ex520

    Discharging capacitors with a resistor, can be done in circuit: https://www.youtube.com/watch?v=2TcVZ2opuNc

    Comment

    • diif
      Badcaps Legend
      • Feb 2014
      • 6978
      • England

      #22
      Re: Sony KDL-46ex520

      I believe this is your service manual.
      Attached Files

      if you find these attachements useful please consider making a small donation to the site

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12330
        • U.S.

        #23
        Re: Sony KDL-46ex520

        You are sure that you have 5 blinks and not 6?

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12330
          • U.S.

          #24
          Re: Sony KDL-46ex520

          According to service manual, 5 blinks indicates tcon error, page 24.
          Last edited by nomoresonys; 12-01-2019, 04:54 PM.

          Comment

          • Global Safari
            Member
            • Nov 2019
            • 32
            • United States

            #25
            Re: Sony KDL-46ex520

            Hi
            Yes 5 blinks. No 12 volts to the T Con board.

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12330
              • U.S.

              #26
              Re: Sony KDL-46ex520

              5- times blinking Check PANEL_VCCat pin 1 of CN6001 on the B* Board which is the mainboard, page 24 service manual.
              Last edited by nomoresonys; 12-01-2019, 05:17 PM.

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #27
                Re: Sony KDL-46ex520

                https://assets.shopjimmy.com/media/c...78-b-top_1.jpg
                Did you check the fuses F6001, 002, 003 on that main board by the LVDS connector?
                I suspect F6001.
                Last edited by budm; 12-01-2019, 06:33 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

                • Global Safari
                  Member
                  • Nov 2019
                  • 32
                  • United States

                  #28
                  Re: Sony KDL-46ex520

                  Originally posted by nomoresonys
                  Maybe take the powerboard out and check underside for bad/cold solder joints, sometimes they look ok but can be loose, look closely at anything on a heatsink and the transformer legs joints, they take the most abuse, be very CAREFUL not to touch the HOT parts, they can hold a BIG charge for quite a while.
                  Originally posted by nomoresonys
                  5- times blinking Check PANEL_VCCat pin 1 of CN6001 on the B* Board which is the mainboard, page 24 service manual.
                  Hi
                  That's where if all started.. no 12 vdc at that test point.
                  Kinda pointing to the main board. The fuses on this board are
                  Very small. Gonna just replace the main board

                  Comment

                  • nomoresonys
                    Badcaps Legend
                    • Jan 2013
                    • 12330
                    • U.S.

                    #29
                    Re: Sony KDL-46ex520

                    I would have felt better about it being the mainboard if we could have proven the backlights and powerboard somehow, those fuses are small but pretty easy to check.
                    Last edited by nomoresonys; 12-01-2019, 05:35 PM.

                    Comment

                    • Global Safari
                      Member
                      • Nov 2019
                      • 32
                      • United States

                      #30
                      Re: Sony KDL-46ex520

                      I can check them tomorrow. Not sure which ones I need to check.

                      Comment

                      • nomoresonys
                        Badcaps Legend
                        • Jan 2013
                        • 12330
                        • U.S.

                        #31
                        Re: Sony KDL-46ex520

                        Those 3 little ones in Buds post #27, check the link there's a clear picture there.

                        Comment

                        • Global Safari
                          Member
                          • Nov 2019
                          • 32
                          • United States

                          #32
                          Re: Sony KDL-46ex520

                          Will do ..thanks.

                          Comment

                          • Global Safari
                            Member
                            • Nov 2019
                            • 32
                            • United States

                            #33
                            Re: Sony KDL-46ex520

                            [QUOTE=budm;928797]https://assets.shopjimmy.com/media/c...78-b-top_1.jpg
                            Did you check the fuses F6001, 002, 003 on that main board by the LVDS connector

                            Comment

                            • nomoresonys
                              Badcaps Legend
                              • Jan 2013
                              • 12330
                              • U.S.

                              #34
                              Re: Sony KDL-46ex520

                              And?

                              Comment

                              • Global Safari
                                Member
                                • Nov 2019
                                • 32
                                • United States

                                #35
                                Re: Sony KDL-46ex520

                                No chance last night.. will do after work tonight.

                                Comment

                                • Global Safari
                                  Member
                                  • Nov 2019
                                  • 32
                                  • United States

                                  #36
                                  Re: Sony KDL-46ex520

                                  Okay..just got home from work..I have put a red square around the 3 fuses in question.I wanted to make sure these are the 3 fuses in question.
                                  Attached Files

                                  if you find these attachements useful please consider making a small donation to the site

                                  Comment

                                  • neilc6
                                    Badcaps Legend
                                    • Nov 2015
                                    • 1550
                                    • Canada

                                    #37
                                    Re: Sony KDL-46ex520

                                    F6001 is below the silkscreen. F6002 and F6003 have arrows pointing to them.

                                    Comment

                                    • budm
                                      Badcaps Legend
                                      • Feb 2010
                                      • 40746
                                      • USA

                                      #38
                                      Re: Sony KDL-46ex520

                                      Those are caps.
                                      See the fuses as marked in the picture.
                                      Attached Files

                                      if you find these attachements useful please consider making a small donation to the site

                                      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

                                      • Global Safari
                                        Member
                                        • Nov 2019
                                        • 32
                                        • United States

                                        #39
                                        Re: Sony KDL-46ex520

                                        Gotcha..will check tonight...gotta make dinner.Will reply back with voltages when I get a chance tonight.

                                        Comment

                                        • Global Safari
                                          Member
                                          • Nov 2019
                                          • 32
                                          • United States

                                          #40
                                          Re: Sony KDL-46ex520

                                          Gotcha..I will check tonight..thanks again!! Are those replaceable?

                                          Comment

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