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    Samsung UE40D5520rkxxu lines on screen

    Just a quick one, what would cause the lines on screen on this in the pics? T-con? Connection/cable? Or is the LCD panel shot??

    Apologies for the poor pics, its all thats available
    Attached Files
    Last edited by Bloopeta; 11-21-2019, 04:27 PM.

    #2
    Re: Samsung UE40D5520rkxxu lines on screen

    Ok, so actually now have the TV in my possession, so have more info, the pics above were how it was, I have since unplugged Tcon, cleaned connections, plugged back in, and now its worse lol.

    Here are the pics as it is now, including pics of it opened up
    Attached Files

    Comment


      #3
      Re: Samsung UE40D5520rkxxu lines on screen

      Turned off, disconnected tcon again, reconnected and turned back on n now looks like this
      Attached Files

      Comment


        #4
        Re: Samsung UE40D5520rkxxu lines on screen

        Constantly changes all the time, very hard to picture
        Attached Files

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          #5
          Re: Samsung UE40D5520rkxxu lines on screen

          Need to start somewhere, maybe test the tcon, I see lots of test points.

          Comment


            #6
            Re: Samsung UE40D5520rkxxu lines on screen

            Originally posted by nomoresonys View Post
            Need to start somewhere, maybe test the tcon, I see lots of test points.
            Where would I saart with that please?

            Comment


              #7
              Re: Samsung UE40D5520rkxxu lines on screen

              Maybe try this first: https://www.youtube.com/watch?v=GcBwTums_mI

              Comment


                #8
                Re: Samsung UE40D5520rkxxu lines on screen

                Do these suffer from tab bond issues ?
                Last edited by vinceroger69; 11-22-2019, 10:55 AM.

                Comment


                  #9
                  Re: Samsung UE40D5520rkxxu lines on screen

                  Originally posted by Bloopeta View Post
                  Where would I saart with that please?
                  HVIN_12V
                  VCC_3.3V
                  VCC_1.8V
                  VCC_1.2V
                  VCC_1.1V some there, I don't usually test tcons much so not sure if these voltages are standard from tv to tv or not, you could test those gamma points? but it really doesn't look like a gamma issue to me.
                  Last edited by nomoresonys; 11-22-2019, 11:01 AM.

                  Comment


                    #10
                    Re: Samsung UE40D5520rkxxu lines on screen

                    Originally posted by nomoresonys View Post
                    Just watched the video, disconnected 1 side at a time, heres the pics.

                    Also tried wiggling and tapping the bonded tabs, that did nothing.
                    Attached Files

                    Comment


                      #11
                      Re: Samsung UE40D5520rkxxu lines on screen

                      https://www.badcaps.net/forum/attach...7&d=1574437580
                      It looks like main board issue.
                      Did you try heating/cooling the maim board yet?
                      Last edited by budm; 11-22-2019, 11:26 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


                        #12
                        Re: Samsung UE40D5520rkxxu lines on screen

                        Originally posted by budm View Post
                        https://www.badcaps.net/forum/attach...7&d=1574437580
                        It looks like main board issue.
                        Did you try heating/cooling the maim board yet?

                        No not yet, been focusing on Tcon, I will try that now

                        Comment


                          #13
                          Re: Samsung UE40D5520rkxxu lines on screen

                          I don't know if it's dangerous, as in might short something BUT I've seen some get a better or clear picture by adjusting one of the ribbon cables while in the diagnostic mode you are in on the picture, with tv running.

                          Comment


                            #14
                            Re: Samsung UE40D5520rkxxu lines on screen

                            Tried heating then cooling board, also tried playing with ribbon cables whilst switched on picture test screen.

                            Pic 1 is how the screen looks with nainboard unplugged, pic 2 is how it now looks all connected after trying the above mentioned things
                            Attached Files

                            Comment


                              #15
                              Re: Samsung UE40D5520rkxxu lines on screen

                              So it seems to be changing somewhat, that makes me think it's the tcon.

                              Comment


                                #16
                                Re: Samsung UE40D5520rkxxu lines on screen

                                Originally posted by nomoresonys View Post
                                So it seems to be changing somewhat, that makes me think it's the tcon.
                                It changes everytime I do something, rarely the same twice

                                Comment


                                  #17
                                  Re: Samsung UE40D5520rkxxu lines on screen

                                  Wonder if that's a match, there's a make offer option also, might want to test your tcon more: https://www.ebay.co.uk/itm/Samsung-4...YAAOSwcrdcv1Gw

                                  Comment


                                    #18
                                    Re: Samsung UE40D5520rkxxu lines on screen

                                    Originally posted by nomoresonys View Post
                                    Wonder if that's a match, there's a make offer option also, might want to test your tcon more: https://www.ebay.co.uk/itm/Samsung-4...YAAOSwcrdcv1Gw
                                    Theres quite a few for sale locally, but since moving the ribbons with it switched on, the picture is terrible and no longer changes, so think Tcon is goosed now, and possibly main board, so not prepared to put any money into it.

                                    Comment


                                      #19
                                      Re: Samsung UE40D5520rkxxu lines on screen

                                      Yep 6-7 years old only 40 inch. not much meat on bone for resale and hard to tell just what's wrong with it.

                                      Comment


                                        #20
                                        Re: Samsung UE40D5520rkxxu lines on screen

                                        Originally posted by nomoresonys View Post
                                        Yep 6-7 years old only 40 inch. not much meat on bone for resale and hard to tell just what's wrong with it.
                                        Precisely, better using for spares

                                        Comment

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