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Sanyo Model DP32746

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    #1

    Sanyo Model DP32746

    Hi all,

    This is my first post. Hope I get it correct!

    The 32" TV set has a great picture, most of the time. Ocassionaly there is distortion along the bottom right hand portion of the screen. There are two places I can see it. The first is just above the "SANYO" name on the case. Three dark narrow trianlge shapes appear from the bottom of the screen, spaced 1" apart about 1/3 of the way up the screen. A second bit of distortion, also triangle about 3/4" on each side. It appears at the right lower corner.

    Both are most noteable during football/baseball games (bad news) when green grass is on the bottom of the pix. Don't watchgolf. When other colors are presented there isn't any distortion. At least I didn't note any.

    I will attempt to add pix, but this is the first try and I'm nogt real computer literate.

    Thanks for any and all ideas!

    OkanoganEd (Retired)

    PS Three pics will follow.
    [FONT="Comic Sans MS"]Okanogan Ed
    Tags: None
    #2
    Re: Sanyo Model DP32746

    Here are the pics.
    Attached Files
    [FONT="Comic Sans MS"]Okanogan Ed

    Comment

      #3
      Re: Sanyo Model DP32746

      you mean the darker lump over in the right near the bottom? i cant see it anywhere else?

      Comment

        #4
        Re: Sanyo Model DP32746

        Yes, the triangle shape in the lower right corner on the first and second pix is ;one of the distortions. Can be seen when greens and browns present.

        The other is in the center of the 2nd pic is are several faint dark lines, three during the last ball game.

        The right pic is an example of the screen when brighter colors like reds, whites and yellows are present. This screen looks normal to me.

        Thanks for the response, any ideas??

        Ed
        [FONT="Comic Sans MS"]Okanogan Ed

        Comment

          #5
          Re: Sanyo Model DP32746

          Originally posted by OkanoganEd View Post
          Yes, the triangle shape in the lower right corner on the first and second pix is ;one of the distortions. Can be seen when greens and browns present.

          The other is in the center of the 2nd pic is are several faint dark lines, three during the last ball game.

          The right pic is an example of the screen when brighter colors like reds, whites and yellows are present. This screen looks normal to me.

          Thanks for the response, any ideas??

          Ed
          The triangular mark is present in all pictures, it's just a little less obvious in the last picture. I'd say 'bruise marks', caused by pressure on the screen.

          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

            #6
            Re: Sanyo Model DP32746

            Hi Bill,

            Is a "pressure bruise" typical for LCDs? DO you know if bruises develope over time? I don't recall seeing it when we received the set 4 years ago. It hasn't been moved around for over two years.

            Any thoughts about the verticle distortion in the middle of the scree above the Sanyo logo??

            Thanks

            Ed
            [FONT="Comic Sans MS"]Okanogan Ed

            Comment

              #7
              Re: Sanyo Model DP32746

              Originally posted by OkanoganEd View Post
              Hi Bill,

              Is a "pressure bruise" typical for LCDs? DO you know if bruises develope over time? I don't recall seeing it when we received the set 4 years ago. It hasn't been moved around for over two years.

              Any thoughts about the verticle distortion in the middle of the scree above the Sanyo logo??

              Thanks

              Ed
              Bruises are caused by pressure on the screen permanently distorting the plastic. Bumping the screen with an elbow is one way. Dragging a toy down the screen is another way. (Obviously this wasn't done by YOUR children.) For some reason they are very sensitive to the background color. Some are almost invisible against certain colors and glaringly obvious with other colors.

              I'm not aware of any fix, other than by replacing the LCD panel.

              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

                #8
                Re: Sanyo Model DP32746

                I accidentally did this to one of my monitors. I'd always wondered if disassembling the panel and re-seating the plastic layers would help.

                Comment

                  #9
                  Re: Sanyo Model DP32746

                  Originally posted by seanc View Post
                  I accidentally did this to one of my monitors. I'd always wondered if disassembling the panel and re-seating the plastic layers would help.
                  It's my understanding that it's the layer on the front of the monitor, but I could be wrong.

                  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

                    #10
                    Re: Sanyo Model DP32746

                    An LCD should only be technically disassembled in a clean room since dust between the films will show up on the screen. Even when replacing CCFLs it's important to keep the film layers together so dust doesn't get between them.

                    An impromptu clean room can be built out of a large plywood box a hepa furnace filter taped to a box fan. This will filter the air of dust particles and allow positive pressure clean air into the box. Then you'd make holes to allow your arms in and possibly integrate rubber gloves into them. It's not the equivalent of a professional clean room but will do well enough for LCDs.
                    Last edited by Krankshaft; 10-14-2010, 06:29 PM.
                    Elements of the past and the future combining to make something not quite as good as either.

                    Comment

                      #11
                      Re: Sanyo Model DP32746

                      Are you kidding ? A clean room for LCDs with rubber gloves built in . LOL Take some pictures when you get yours finished.

                      Comment

                        #12
                        Re: Sanyo Model DP32746

                        Interesting necromancy there, splitcrete...
                        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

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