52" Sharp Aquos LCD White Dots

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  • RCFLYER
    Member
    • Jan 2012
    • 36
    #1

    52" Sharp Aquos LCD White Dots

    I have a 52" Aquos LC60C52U LCD The problem is it has white Dots, like a snow storm on the screen? What can be causing this, and can it be repaired?
    Attached is a picture of what it looks like.
    Attached Files
    Tags: None
    • Mr Bill
      Badcaps Veteran
      • Nov 2011
      • 648
      • USA
      #2
      Re: 52" Sharp Aquos LCD White Dots

      I just replaced the main board on my wife's parents 52D62U and this is what the screen looked like. It could be the tcon board. Is the fuzz in the menu screen?
      Attached Files
      Last edited by Mr Bill; 04-11-2012, 07:35 PM.

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK
          #3
          Re: 52" Sharp Aquos LCD White Dots

          It looks like T-con, assuming this is a Sharp with a separate 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

            • RCFLYER
              Member
              • Jan 2012
              • 36
              #4
              Re: 52" Sharp Aquos LCD White Dots

              When I pressed on the mian board I was able to make a large persentage of the dots go away. I took the main board off and with a magnifying glass looked at most of the components (and there are many tiny ones) but I didn't see anything obvious and finding a cold solder joint on those is going to be virtually impossible. So I put it all back together and turn on the TV. The dots were 99% gone but then came back after a minute. I put pressure on this metal tab to flex the board and in doing so, it was not all the way in place (seems like some sort of grounding tab but not screwed down just snapped in place) and then the picture went perfect – for now.
              Attached is a picture
              Attached Files

                Comment

                • cashkennedy
                  Badcaps Veteran
                  • Aug 2011
                  • 666
                  • USA
                  #5
                  Re: 52" Sharp Aquos LCD White Dots

                  Might want to check all your cables, like the lvds cable and ribbon cables to make sure theyre not what is being flexed when you push on the main board.
                  Fixed so far 12 lcd's , 1 plasmas, 5 monitors, 0 dlp's (plan to keep the dlps at 0). and 3 atx power supplies, and 2 motherboards.

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA
                      #6
                      Re: 52" Sharp Aquos LCD White Dots

                      Alot of board grounding depends on the circuit board mounting holes with ground pads to ground the circuit grounds to the chassis, so it may be good idea to tighten up the PCB mounting screws on all the board.
                      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

                        • cashkennedy
                          Badcaps Veteran
                          • Aug 2011
                          • 666
                          • USA
                          #7
                          Re: 52" Sharp Aquos LCD White Dots

                          this post was not meant for this thread lol >.> sorry just ignore this spot
                          Fixed so far 12 lcd's , 1 plasmas, 5 monitors, 0 dlp's (plan to keep the dlps at 0). and 3 atx power supplies, and 2 motherboards.

                            Comment

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