Samsung LNT4071FX Dark Side Screen Flicker

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • musjim
    Member
    • Jul 2011
    • 30

    #1

    Samsung LNT4071FX Dark Side Screen Flicker

    Have a samsung LNT4071FX model lcd. Left side of screen is dark when first turned on, reachs about mid way through screen. The darker area has some shadowing too. As the set warms up the dark area will flicker in an out until it goes away after 30 mins of use. I first thought it might be a tcon issues, but did a little research and dont think it is it. Looking for the first area to troubleshoot to determine if it is the lcd or one of the boards that is going bad. The Menu seems to show up correctly at in the two attached pictures.
    Attached Files
  • b700029
    Banned
    • Sep 2010
    • 640

    #2
    Re: Samsung LNT4071FX Dark Side Screen Flicker

    Check the signal input stage.

    Try manually warming some components there.

    Comment

    • PlainBill
      Badcaps Legend
      • Feb 2009
      • 7034
      • USA

      #3
      Re: Samsung LNT4071FX Dark Side Screen Flicker

      Originally posted by b700029
      Check the signal input stage.

      Try manually warming some components there.
      You have GOT to be kidding.

      PlainBill
      Last edited by PlainBill; 08-15-2011, 07:36 AM.
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

      Comment

      • PlainBill
        Badcaps Legend
        • Feb 2009
        • 7034
        • USA

        #4
        Re: Samsung LNT4071FX Dark Side Screen Flicker

        Originally posted by musjim
        Have a samsung LNT4071FX model lcd. Left side of screen is dark when first turned on, reachs about mid way through screen. The darker area has some shadowing too. As the set warms up the dark area will flicker in an out until it goes away after 30 mins of use. I first thought it might be a tcon issues, but did a little research and dont think it is it. Looking for the first area to troubleshoot to determine if it is the lcd or one of the boards that is going bad. The Menu seems to show up correctly at in the two attached pictures.
        This might be the tcon or it might be the panel itself. I'd start by carefully reseating the conductors from the tcon to the panel. Then see if the problem changes if the tcon is flexed. It looks like a problem on the most significant address line.

        PlainBill
        For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

        Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

        Comment

        • rayrod81
          Badcaps Veteran
          • Oct 2010
          • 205

          #5
          Re: Samsung LNT4071FX Dark Side Screen Flicker

          Like PlainBill said T-Con or Panel. Unfortunately, from my experience it is a bad connection on the panel itself and more than likely has nothing to do with T-Con. This failure of the panel is actually a fairly common occurence on Samsung panels.

          Comment

          • musjim
            Member
            • Jul 2011
            • 30

            #6
            Re: Samsung LNT4071FX Dark Side Screen Flicker

            Originally posted by rayrod81
            Like PlainBill said T-Con or Panel. Unfortunately, from my experience it is a bad connection on the panel itself and more than likely has nothing to do with T-Con. This failure of the panel is actually a fairly common occurence on Samsung panels.
            So is there a possible fix, like applying pressure to lcd connection? I've read up on some of the tab bond issues and wonder if that could at least extend the life a few more months.

            Comment

            • musjim
              Member
              • Jul 2011
              • 30

              #7
              Re: Samsung LNT4071FX Dark Side Screen Flicker

              Not sure if I can call it a fix, but the screen is working perfect again. I took the metal housing off the panel and found the left hand side was flopping away from the metal bracket. Seems like the glass screen is glued to the metal and this left side has come off. Also traced the poor connection to the left most ribbon cable running from the top of the panel to the screen. I added a couple pieces of a firm but squishy foam to the inside of the outer metal bracket and that has created sufficient pressure to hold both the screen and the ribbon cable in place. So far so good. Just wonder how long it will last. Thanks for all of the help.

              Comment

              • pepekale
                New Member
                • Sep 2013
                • 4
                • usa

                #8
                Re: Samsung LNT4071FX Dark Side Screen Flicker

                Originally posted by musjim
                Not sure if I can call it a fix, but the screen is working perfect again. I took the metal housing off the panel and found the left hand side was flopping away from the metal bracket. Seems like the glass screen is glued to the metal and this left side has come off. Also traced the poor connection to the left most ribbon cable running from the top of the panel to the screen. I added a couple pieces of a firm but squishy foam to the inside of the outer metal bracket and that has created sufficient pressure to hold both the screen and the ribbon cable in place. So far so good. Just wonder how long it will last. Thanks for all of the help.
                Hey musjim!. I gotta give it to u. I had the same exact issue with my TV. I applied your method and my tv is running fine again. Those Lnt 4071fx where one of the best samsung tv made atthe time unfortunately came with the default lcd and bad power supply. Thanks again

                Comment

                • pepekale
                  New Member
                  • Sep 2013
                  • 4
                  • usa

                  #9
                  Re: Samsung LNT4071FX Dark Side Screen Flicker

                  Hey musjim!. I gotta give it to u. I had the same exact issue with my TV. I applied your method and my tv is running fine again. Those Lnt 4071fx where one of the best samsung tv made atthe time unfortunately came with the default lcd and bad power supply. Thanks again

                  Comment

                  • pepekale
                    New Member
                    • Sep 2013
                    • 4
                    • usa

                    #10
                    Re: Samsung LNT4071FX Dark Side Screen Flicker

                    Originally posted by musjim
                    Not sure if I can call it a fix, but the screen is working perfect again. I took the metal housing off the panel and found the left hand side was flopping away from the metal bracket. Seems like the glass screen is glued to the metal and this left side has come off. Also traced the poor connection to the left most ribbon cable running from the top of the panel to the screen. I added a couple pieces of a firm but squishy foam to the inside of the outer metal bracket and that has created sufficient pressure to hold both the screen and the ribbon cable in place. So far so good. Just wonder how long it will last. Thanks for all of the help.
                    Man your method only works when it's warm.Anytime the room get cold the tv start acting up.The left side get darker and flickiring. FU$k SAMSUNG.LOng live APPLE! I'll never buy a samsung TV again

                    Comment

                    • pepekale
                      New Member
                      • Sep 2013
                      • 4
                      • usa

                      #11
                      Re: Samsung LNT4071FX Dark Side Screen Flicker

                      Man your method only works when it's warm.Anytime the room get cold the tv start acting up.The left side get darker and flickiring. FU$k SAMSUNG.LOng live APPLE! I'll never buy a samsung TV again

                      Comment

                      • odt123
                        New Member
                        • Jul 2014
                        • 5
                        • United States

                        #12
                        Re: Samsung LNT4071FX Dark Side Screen Flicker

                        I am also having problems with one of these, however not the same. I'm new, should I add my problem to this thread or post a new? Thanks in advance.

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA

                          #13
                          Re: Samsung LNT4071FX Dark Side Screen Flicker

                          Please make new thread, with make, model, and good clear pictures.
                          Last edited by budm; 07-08-2014, 02:06 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

                          Related Topics

                          Collapse

                          • Kiberge
                            Samsung LH82QENELGC/EN Help needed - Static line on screen
                            by Kiberge
                            HI guys!

                            I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
                            I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊

                            the TV is powering up, working as normally and picture is all good, except a 1.5-inch-wide vertical line of snow/static across the screen.


                            This TV is a Signage Display/Public Display version and it's been used at my work for 4-5 years showing commercials 24/7. The fault occurred when...
                            04-22-2024, 11:28 AM
                          • Ryan.man
                            Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
                            by Ryan.man
                            Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

                            My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

                            This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
                            02-04-2025, 12:23 PM
                          • sputnikoff
                            Samsung un50nu7100f dark screen right most side.
                            by sputnikoff
                            Has anyone out there run into screen dark on right most side on a Samsung un50nu7100f. I had half screen at first replaced the strips and back light is lit really good, actually it's brighter than left side when u lift the panel.I assume the panel is toast?...
                            11-11-2021, 10:24 AM
                          • kotel studios
                            Samsung LC32HG70QQUXEN - vertical and horizontal stripes across the screen
                            by kotel studios
                            Hi,

                            Just now my Samsung LC32HG70QQUXEN monitor gave up on me. On cold boots I get many vertical stripes going across the screen (see the attached picture). After it runs for 1-2 minutes those go away but there are horizontal stripes going across the whole screen no matter of the input and PCs I use. (couldn't take an picture of it since the image size goes to 20MB and the camera doesn't pick them up)

                            In a video about a 27" monitor with an similar issue the guy removes one resistor and supposedly the entire monitor goes back to life? For sure this fix is only temporary....
                            08-06-2025, 02:07 AM
                          • ravi_1617
                            HCL Laptop SCREEN SIZE SHRINK LEFT SIDE AROUND 2 INCHES
                            by ravi_1617
                            Hello to all ,
                            I have this HCL ME LAPTOP K 41 ,screen image is shrieked clock /speaker left side approx. 2 inches .Its 14.1 LCD SCREEN. I have replaced lcd screen ,found no difference
                            Its blank that area blank and bottom of Task bar is rolled at bottom displaying top portion image . In bios /setup also getting same problem
                            on external VGA port image is perfect /normal , Attached image...
                            07-25-2025, 12:07 AM
                          • Loading...
                          • No more items.
                          Working...