samsung le46c755 2 vertical rows of dead red pixels

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • platinumfin
    New Member
    • Mar 2015
    • 6
    • finland

    #1

    samsung le46c755 2 vertical rows of dead red pixels

    Hi! I have about 3yrs old 3d tv and suddenly there is 2 vertical lines 1 pixel wide of dead red pixels. Is it panel fault or something else? Blue and green colour are visible but no red on those lines...
  • Alastair E
    Chief Womble
    • Mar 2013
    • 1963
    • U.K.

    #2
    Re: samsung le46c755 2 vertical rows of dead red pixels

    Probably Tab-Bond failure....
    TELEFIX

    How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
    http://www.irf.com/technical-info/appnotes/an-1088.pdf
    PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

    Comment

    • platinumfin
      New Member
      • Mar 2015
      • 6
      • finland

      #3
      Re: samsung le46c755 2 vertical rows of dead red pixels

      So.....any hope for fix¿

      Comment

      • freakaftr8
        Badcaps Legend
        • Oct 2012
        • 3743
        • USA

        #4
        Re: samsung le46c755 2 vertical rows of dead red pixels

        you could try pressing down on the affected tab that goes into the panel can put a shim underneath the metal frame. However if this does fix the problem it will eventually get worse to the point where it's rendered useless for that whole array of pixels will be dead. It's unfortunate but just part of the game with LCD panels
        Did I leave the soldering iron on?

        Comment

        • Shinju
          Badcaps Legend
          • Mar 2014
          • 1239
          • USA

          #5
          Re: samsung le46c755 2 vertical rows of dead red pixels

          Or.. you could post some photos and we can help diagnose the issue a little better!

          Just say'n

          Comment

          • platinumfin
            New Member
            • Mar 2015
            • 6
            • finland

            #6
            Re: samsung le46c755 2 vertical rows of dead red pixels

            There is poor picture but you can see what i mean (first picture flipped sideways somehow )



            Attached Files

            Comment

            • Shinju
              Badcaps Legend
              • Mar 2014
              • 1239
              • USA

              #7
              Re: samsung le46c755 2 vertical rows of dead red pixels

              Looks like tab bond failure, do they go away after the panel warms up or change colors?

              Comment

              • platinumfin
                New Member
                • Mar 2015
                • 6
                • finland

                #8
                Re: samsung le46c755 2 vertical rows of dead red pixels

                Originally posted by Shinju
                Looks like tab bond failure, do they go away after the panel warms up or change colors?
                Nope they wont go away. Are the bonds upper or lower side of screen?

                Comment

                • platinumfin
                  New Member
                  • Mar 2015
                  • 6
                  • finland

                  #9
                  Re: samsung le46c755 2 vertical rows of dead red pixels

                  And by the way i have le46c659 model too and i was wondering could it be any sense to switch panel from that to the other?

                  Comment

                  Related Topics

                  Collapse

                  • Bad_IC
                    Samsung UE40F6320AY dead pixels?
                    by Bad_IC

                    Hello,

                    would someone kindly tell me if the TV panel has dead pixels problem?

                    I attached the photo, if you zoom it you can see the several dots...

                    Thanks in advance

                    Bad_IC...
                    01-11-2025, 05:05 AM
                  • tech9pc
                    Samsung QN65Q80AAFXZC QLED TV has a white vertical Bar
                    by tech9pc
                    Hi all Happy Holidays! Was just wondering if you think this white vertical bar would be fixable. Maybe bad TCon or ribbon cable? Contemplating trading a 50 inch Hisense 4K Roku for the Samsung but might get burned lol. The Samsung is model QN65Q80AAFXZC QLED TV has a white vertical Bar. Any thought appreciated. Thanks.
                    12-24-2023, 11:28 AM
                  • piposarcade
                    Samsung UN50KU6300 dead no standby led
                    by piposarcade
                    Samsung UN50KU6300 dead no standby led

                    01-04-2024, 01:33 PM
                    Greetings to all, a while ago my TV was dead, it didn't turn on and the standby light was off, the next day it is working. But these days it no longer wants to turn on, I did some troubleshooting, I disconnected the main board, I checked the voltage on the backlight and there is 400 DC, when I connect it again the main board the voltage drops, in all that troubleshooting, miraculously the standby light comes on and the TV works. After an hour I check and test, I turn on the TV, the Stanby light flashes 3 times and it...
                    05-22-2024, 02:07 PM
                  • kevin_allein
                    Samsung QE 75 Q 7 FGMTZG Power Supply dead
                    by kevin_allein
                    Hi, have this Samsung QE 75 Q 7 FGMTZG TV with no function. First analysis shows the power supply board is dead and fuse blown. Power Supply has the number BN94-11439A. I did short circuit test transistor and diodes and those do not appear to have shorts. I must admit I did not look at every single data sheet.
                    In the TV was some black dust residue, so probably one of the electrolytic caps blew, but they do not show short either.

                    Does anyone have schematics for that board ?
                    Any good tip, what could be the issue ?
                    02-27-2025, 12:15 PM
                  • JesusJones
                    Samsung Plasma Intermittent Vertical Bars (repeatable) PN50B430
                    by JesusJones
                    Trash picked this plasma for parts and found it had some bad solder joints. It powered on after reworking most of the boards and seems like it may even work.

                    The symptoms is, when showing a picture of bright (mostly white) intensity (within the affected area only) a vertical strip 2 3/4" wide will begin to fuzz out (just to the right of samsung logo, 16 3/8" from screen edge), and soon turns black (from top to bottom). Changing to a darker scene immediatley ater will cause the black stripe to fade back in (it fuzzes and clears up again) and it starts working just fine....
                    04-13-2021, 01:45 PM
                  • Loading...
                  • No more items.
                  Working...