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Sony KDL-48W605B no picture but sound

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    Sony KDL-48W605B no picture but sound

    hello guys,

    today I buy Sony KDL-48W605B for repair

    tv turn on ,backlight on but no picture, i click menu sound ok.

    I found little fuse on tcon?(see pic) blown. so I solder wire to check if it work,but not working

    what do you think?

    panel or ?
    Attached Files

    #2
    Re: Sony KDL-48W605B no picture but sound

    Replace the T-CON Bd.

    Comment


      #3
      Re: Sony KDL-48W605B no picture but sound

      Originally posted by Andrew F. Ali View Post
      Replace the T-CON Bd.
      this model have t-con glued on panel,so I cant remove it from panel.

      Comment


        #4
        Re: Sony KDL-48W605B no picture but sound

        pics
        Attached Files

        Comment


          #5
          Re: Sony KDL-48W605B no picture but sound

          Safety has fired because it is a short or very high consumption. Look for a smd capacitor in short or a dc-dc converter with trouble.

          Comment


            #6
            Re: Sony KDL-48W605B no picture but sound

            Yep, start checking for shorted cap/s on that integrated T-CON board, do not put wire in place of the fuse.
            Similar to this: https://www.badcaps.net/forum/showth...ONY+KDL-40W590
            Last edited by budm; 07-05-2019, 01:48 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


              #7
              Re: Sony KDL-48W605B no picture but sound

              ok I am checking now...

              Vin_12V : 12.75V

              Comment


                #8
                Re: Sony KDL-48W605B no picture but sound

                great,now tv dont turn on ,just 5 red light blinks

                Comment


                  #9
                  Re: Sony KDL-48W605B no picture but sound

                  ok guys ,I think I found something

                  I found 4 caps shorted to ground CD14,CD15,CD16,CD17

                  but what I see CD14 is cracked?
                  Attached Files

                  Comment


                    #10
                    Re: Sony KDL-48W605B no picture but sound

                    ok removed cap from board,and now no short on 3 caps to left

                    now I need to find specifications of cap I removed,I dont have capacitance meter

                    I have old mainboard from tv, and found same size of cap

                    Comment


                      #11
                      Re: Sony KDL-48W605B no picture but sound

                      I found old t con board from SONY KDL-42W705B ,I will desolder one capacitor same size and check if will turn on with picture.

                      or it is not good idea
                      Last edited by chrle; 07-06-2019, 07:51 AM.

                      Comment


                        #12
                        Re: Sony KDL-48W605B no picture but sound

                        The four capacitors are in parallel. It works with just 3. If not, there are other problems.

                        Comment


                          #13
                          Re: Sony KDL-48W605B no picture but sound

                          Ok, so what do you get with the one bad cap removed, any change??

                          Comment


                            #14
                            Re: Sony KDL-48W605B no picture but sound

                            tv turn on,no red light but still no picture..hmm

                            my mistake,I have tv on my bed so I dont see picture till I click menu
                            Last edited by chrle; 07-06-2019, 09:41 AM.

                            Comment


                              #15
                              Re: Sony KDL-48W605B no picture but sound

                              Originally posted by nomoresonys View Post
                              Ok, so what do you get with the one bad cap removed, any change??
                              ok guys , I have picture without cap that is shorted.

                              tv is working fine,I will test him for few hours.

                              anybody know that cap values? or leave it like this?
                              Attached Files
                              Last edited by chrle; 07-06-2019, 09:42 AM.

                              Comment


                                #16
                                Re: Sony KDL-48W605B no picture but sound

                                CD14,CD15,CD16,CD17 are probably all the same value. If you have any way to measure capacitance, then you can remove one of the good capacitors and measure it's value.

                                Comment


                                  #17
                                  Re: Sony KDL-48W605B no picture but sound

                                  Leave that. It also works with 3 parallel capacitors. Do not ruin him worse.

                                  Comment


                                    #18
                                    Re: Sony KDL-48W605B no picture but sound

                                    Well that's cool, good to know it will run fine one cap down.

                                    Comment


                                      #19
                                      Re: Sony KDL-48W605B no picture but sound

                                      They put in 4 caps for reason, they would have put only three to save money if the fourth one is not needed.
                                      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


                                        #20
                                        Re: Sony KDL-48W605B no picture but sound

                                        What do you think will happen if he doesn't replace the cap?

                                        Comment

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