Announcement

Collapse
No announcement yet.

Display problem with Sharp lc-70c6500u

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Display problem with Sharp lc-70c6500u

    Hi, I was given a 70" Sharp tv, that shows some lines on the lower right side, and some on both top corners, although on the left hand side is hard to notice, because it comes and goes...
    All of them are line flickering, not static...

    I took some pictures, because I don't know exactly how to describe the problem.

    Thank you in advance for your comments or ideas.
    Attached Files
    Tags: None
    #2
    Re: Display problem with Sharp lc-70c6500u

    you likely have a bad panel... :-( It can't be fixed BUT it can be saved ... maybe. There are a couple of threads on the forum that will help you get thru the "save operation" if you have a little DIY diligence and some room to take the set apart. Search on sharp 70 or vizio 70 (same panel, same problem).

    this is one
    https://www.badcaps.net/forum/showth...light=sharp+70
    Last edited by budwich; 11-23-2015, 03:22 PM.

    Comment

      #3
      Re: Display problem with Sharp lc-70c6500u

      Ouch....
      I think i will try to save it.
      I'm going to do some reading to make sure I do it properly....

      Comment

        #4
        Re: Display problem with Sharp lc-70c6500u

        If you are lucky in terms of the issue (I use "lucky" lightly... it would be better if you didn't have any issue), then the operation is somewhat straight forward and will give you back an operational set based on my experience... the neighbor's set is still functioning well. Good "surgery". :-)

        Comment

          #5
          Re: Display problem with Sharp lc-70c6500u

          Thank you, I've read the whole thread a couple of times, trying to make sure I get the procedure right, and found myself immersed, reading like it was a thriller, specially at the point where you removed the bezel...
          It even made my blood pressure go up a bit, haha
          Hopefully I got the idea right.

          Originally posted by budwich View Post
          OK... it looks like "shortly" could turn into "longly"
          HELP.

          I got the bezel off.... lots of unscrewing as the bezel acts like an integral structure member holding the screen flat and "sandwiched". IF you remove any of the screws before you have positioned the screen in your "flat" work space, depending on how many are left on at the time, the screen will almost be like "toffee" bending quite a bit... surprise. I thought the back bracing and such would be more rigid. Anyways, I should have left more screws on.

          The "HELP" is now that I have the bezel off, what next? It now looks scary. Access to the termination point of the flex cable tab is NOT readily available as it is goes under what I assume is the top protective screen of the "5 layer screen panel sandwich".
          What do I do to remove or at least "slide" the screen over to get access to those points?
          I am hoping I don't actually have to remove it but I suspect the "vacuum" effect will be great with that larger of a surface area. Dust is going to be an issue that I wasn't expecting to deal with (its my basement and it does have a work shop in there) as I was just expecting to deal with some form of "edge" only leaving the panel intact.

          I don't want to proceed until I get some comments / understanding as to the best way forward.... thanks for this.

          Comment

            #6
            Re: Display problem with Sharp lc-70c6500u

            The set is big and unless you are too, you will need help. Your problem is a bit different in that you have no codes flashing and you have a picture. I had to remove cables from the tcon board to get the set to start up in some form. If I "see" your pictures correctly, odds are you have some issue with the flex tab drivers on the right side (looking at the set). As others have found, if you get access to that side (carefully), you can visually see the tab drivers for problems (heat / burn spotting) and others have also felt them for a significant temperature difference.

            Anyways, go slow and do some checks via cable disconnection at the tcon and also at the lower corner of the panel (cable going between the bottom edge board and the side) which are "unclampable" so they can be disconnected and connected again.

            As for your "quoted section".... yes it was scary as I didn't know how the tab cables were actually connected and didn't spot the "bonding pad /area" (which is very small) until I looked very close at the panel... almost made the mistake of trying to lift the panel layers apart... which you DO NOT have to do.

            Comment

              #7
              Re: Display problem with Sharp lc-70c6500u

              I'm not entirely convinced that this is just a horizontal tab driver fault on your TV this looks like a combination of a horizontal driver and a vertical driver failure at the same time. However I could be wrong and it could be a horizontal driver fault mimicking the vertical lines that you're seeing. However if it is a panel fault most likely and you are willing to give it a shot you have nothing to lose anyhow. I would like to see what this picture looks like with an actual video or something being displayed instead of a black background with just a menu before you go any further.
              Did I leave the soldering iron on?

              Comment

                #8
                Re: Display problem with Sharp lc-70c6500u

                Thank you.....

                Before starting the "surgery" as suggested, I connected some video source.
                and took some pictures...
                Also uploaded a bit of video to see if that helps.

                https://youtu.be/Q6yVIed8yC8
                Attached Files

                Comment

                  #9
                  Re: Display problem with Sharp lc-70c6500u

                  Before you go taking parts off the screen disconnect the left side side driver boards from the panel. That is the small ribbon connector going to the lower left side board on the lower left side of the panel. That small area on the bottom of the screen left side about a quarter of the way up where its bright is almost a sure tell sign that you have a problem on that side
                  Did I leave the soldering iron on?

                  Comment

                  Previous template Next
                  Working...
                  X