Samsung LN46B610 Tiny Horizontal Lines

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  • mdmccool
    Member
    • Feb 2013
    • 28
    • USA

    #1

    Samsung LN46B610 Tiny Horizontal Lines

    I picked up a Samsung LN46B610 from 2009 that has horizontal line issues. The lines are present on the left side of the screen - top to bottom - and gradually fade away to the center of the screen. Kind of a venetian blind effect. The lines are VERY thin, black (can't see them on black or dark colors), and occur about every quarter inch from top to bottom. The lines seem to be slightly worse when the set is first powered-up - then they fade a bit. They are almost undetectable from normal viewing distances.

    I cleaned and reseated all the ribbon cables, gently moved the tabs, etc and nothing seems to effect the lines.

    Upon checking the PS voltages I notices the 13V line was measuring 12.38, seems a tad low. Maybe my PS caps are on their way out? Is it possible that this low voltage could be causing these lines - perhaps the failing caps are not filtering well enough?
    Attached Files
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Samsung LN46B610 Tiny Horizontal Lines

    I've not had the exact same problem on your set, but I've had a similar problem on a year-older Samsung, which I'm watching right now (it's fixed.) It had repeating vertical lines which were green tinted. It turned out to be the T-con and swapping that sorted it. (Also, I just fixed one model using the same T-con, but that had an unrelated fault.) Usually regular, repeating glitches are T-con problems.

    The PS caps can be confirmed by heating up the PSU with a hairdryer. Should the rail significantly rise, this could be the problem.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • mdmccool
      Member
      • Feb 2013
      • 28
      • USA

      #3
      Re: Samsung LN46B610 Tiny Horizontal Lines

      Thanks Tom - I'll try to find another T-con. Do you think the slightly low voltage on the 13V line is of concern?

      Thanks,
      Matt

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: Samsung LN46B610 Tiny Horizontal Lines

        It's probably alright; the 13V rail on the LE40A656 measured 12.85V though, so I do wonder why they called it a 13V rail when it sits close to 12V on your model. Try heating the capacitors which can confirm a failure with those.
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • mdmccool
          Member
          • Feb 2013
          • 28
          • USA

          #5
          Re: Samsung LN46B610 Tiny Horizontal Lines

          Thanks Tom, will try the heat and report back.

          I'm getting a little confused while searching for a T-con replacement. Seems as if there were two manufacturers: AUO and Samsung. My board is the Samsung. Which number on my T-con is the part number? Is it the 2009FA7M4C4LV0.9 number? These 2009FA7M4C4LV0.9 boards seem to be all over the place and different parts sellers have conflicting compatibility listings.

          Just want to make sure if I get a T-con that matches the number I'll be set to go.

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: Samsung LN46B610 Tiny Horizontal Lines

            2009FA7M4C4LV0.9 is the board. I'm not aware of any compatibility issues. If your TV has a Samsung panel, you must use the Samsung T-con.
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

            • mdmccool
              Member
              • Feb 2013
              • 28
              • USA

              #7
              Re: Samsung LN46B610 Tiny Horizontal Lines

              Thanks again for the info. Will report back once new t-con is installed.

              Comment

              • mdmccool
                Member
                • Feb 2013
                • 28
                • USA

                #8
                Re: Samsung LN46B610 Tiny Horizontal Lines

                Installed new (used) T-con, lines are still present as before. Main board or panel?

                Comment

                • cadiman
                  Badcaps Veteran
                  • Mar 2010
                  • 397

                  #9
                  Re: Samsung LN46B610 Tiny Horizontal Lines

                  Failed t-con would give pattern across screen mostly.

                  A partial pattern or fading could very well be panel failure.

                  Someone could have sold a failed t-con thinking they pulled it from a tv with a failed panel.

                  It would help to know who the panel was made by.

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #10
                    Re: Samsung LN46B610 Tiny Horizontal Lines

                    That is a Samsung T-con. Has 100Hz/120Hz motion interpolation.
                    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                    Comment

                    • mdmccool
                      Member
                      • Feb 2013
                      • 28
                      • USA

                      #11
                      Re: Samsung LN46B610 Tiny Horizontal Lines

                      The "new" t-con could be bad as well, but what are the chances that it would have the exact same defect?

                      I believe it is a Samsung panel and yes it is a 120hz model:
                      Attached Files

                      Comment

                      • Davheel
                        New Member
                        • Mar 2013
                        • 8
                        • Australia

                        #12
                        Re: Samsung LN46B610 Tiny Horizontal Lines

                        Hi just wonder has this issue been resolved, thanks

                        Comment

                        • mdmccool
                          Member
                          • Feb 2013
                          • 28
                          • USA

                          #13
                          Re: Samsung LN46B610 Tiny Horizontal Lines

                          Davheel- Just noticed your post - sorry for the delay. The issue has not been resolved, in fact, it has been getting worse. I have been regularly watching this TV as the lines are unnoticeable at normal viewing distance. However, lately the lines seem to have grown thicker and have now filled the entire screen from left to right. Occasionally the top-most four or five lines flicker white.

                          I think I will swap the old T-con back in and see if there is any change, and check the voltages again.

                          Any new ideas?

                          Thanks,
                          Matt

                          Last edited by mdmccool; 02-18-2014, 08:23 AM.

                          Comment

                          • corepuncher
                            New Member
                            • Mar 2014
                            • 2
                            • usa

                            #14
                            Re: Samsung LN46B610 Tiny Horizontal Lines

                            I have this problem too with this exact same TV.

                            The black lines are worse on left side, and are less noticeable on right side. From 10' away they are not that bad but I"m afraid they will get worse.

                            Has anyone solved this problem? My TV is way out of warranty.

                            Please tell me there is a fix...aside from a new TV!

                            Comment

                            • corepuncher
                              New Member
                              • Mar 2014
                              • 2
                              • usa

                              #15
                              Re: Samsung LN46B610 Tiny Horizontal Lines

                              Hmmm, the silence is not a good sign.

                              Comment

                              • mdmccool
                                Member
                                • Feb 2013
                                • 28
                                • USA

                                #16
                                Re: Samsung LN46B610 Tiny Horizontal Lines

                                Have not had a chance to pull mine apart again yet - hopefully I will within the next few weeks.

                                Comment

                                • johnboy1313
                                  Badcaps Legend
                                  • Nov 2012
                                  • 1959
                                  • USA

                                  #17
                                  Re: Samsung LN46B610 Tiny Horizontal Lines

                                  Have you tried wiggling the LVDS cable while the set is on?

                                  Comment

                                  • mdmccool
                                    Member
                                    • Feb 2013
                                    • 28
                                    • USA

                                    #18
                                    Re: Samsung LN46B610 Tiny Horizontal Lines

                                    Yes - have reseated and cleaned all cables, but it would be worth another try.

                                    This set seems to be going downhill rapidly.

                                    The set now changes the tiny black lines to grey - in a cascading pattern - from top of picture to bottom. Takes about a second, then resets and starts again. It will cause ghosting in fast moving content. Kind of like a waterfall effect.

                                    After about 20 minutes the cascading gets faster and faster, and doesn't go all the way to the bottom. It kind of works it's way to the top and then stops all together, leaving me with just the black tiny lines.

                                    Any thoughts on whats going on here???

                                    VIDEO LINK (Difficult thing to capture):

                                    Comment

                                    • mdmccool
                                      Member
                                      • Feb 2013
                                      • 28
                                      • USA

                                      #19
                                      Re: Samsung LN46B610 Tiny Horizontal Lines

                                      NEW VIDEO HERE

                                      Now the set flickers for about 15 minutes, then goes into cascading lines (see video in my last post above) then clears-up altogether (except for the ever-present tiny black lines).

                                      Any thoughts on this would be greatly appreciated.

                                      Thanks,
                                      Matt

                                      Comment

                                      • mdmccool
                                        Member
                                        • Feb 2013
                                        • 28
                                        • USA

                                        #20
                                        Re: Samsung LN46B610 Tiny Horizontal Lines

                                        Swapped the T-Con back to the original and all the new problems are still present, so I think I can rule out the T-Con. Also played with freeze spray on all the boards, tab bonds, and re-cleaned all cables and connections with no improvement.

                                        Any chance this can be the tuner/video board before I scrap the set?

                                        Comment

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