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[Solved] Sony KDL-40EX520, yellow discoloration, blue glow, free matrix.

keseszel 7851 5
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  • #1 16927409
    keseszel
    Level 26  
    Hello.
    I got the mentioned TV.
    Yellowish, sometimes greenish colors. Ghosts on the screen. The previous screen, the logo, disappears for a long time. Blue vertical lines with patterns in some places.
    I will add photos in the afternoon.

    In addition to T-CON, I bet on a dying matrix. Has anyone dealt with such a model?

    Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix.

    Finally, I undressed the tv and here is my huge surprise.
    Sony KDL-40EX520, yellow discoloration, blue glow, free matrix.

    No RM or other layout :shocked!: . There is a t-con board, but completely differently equipped than I expected. Designation ESL_MB7C2LV1.3
    Sony KDL-40EX520, yellow discoloration, blue glow, free matrix.

    I unhooked the tapes. After unfastening the black tape, the TV does not respond, but blinks red 5 times. The cycle repeats itself.
    After unfastening both white tapes, half of the screen is black, and the other half of the screen is conventionally white (far from white).
    After unfastening one white tape, only half the image is displayed. Logic.
    I am most surprised that after removing both, there is no one color, but as I wrote, half is white, half black with clear stripes going through the matrix.
    I found the tcon module at a price from PLN 80 per drug, I do not give the price in dollars, you can find it on Ali.
    The purchase of tcon is taken into account only when I manage to do something with the stripes on the matrix, although I am not optimistic.
    Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix. Sony KDL-40EX520, yellow discoloration, blue glow, free matrix.

    After disassembling the matrix and activating it in a horizontal position, the TV reports with normal colors (blue background and white subtitles). After a while, vertical stripes appear, black discoloration appears. By periodically pressing the tape from the matrix, the strips are liquidated. The image changes to a black background filling the screen, the subtitles change to yellow. The picture is solid, no lines, no ghosts, colors are wrong.

    The TV matrix does not display half of the picture correctly. When both tapes are connected and the TV set is black, NOTHING is displayed on the screen. After unfastening the tape 1, the image is half-screen, blue. The content of the image is displayed.

    I am looking for a flex tape with the markings 101ft07. Such an inscription is on the tape. or ESL_ MB7_S4LV0.3 strips

    After sticking 5 pins with tape in the place marked with a green square, the system marked with a red square gets hot and quite strongly.

    Sony KDL-40EX520, yellow discoloration, blue glow, free matrix.
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  • #3 16929073
    keseszel
    Level 26  
    LTY 400HM08 matrix. Apparently very lame.
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  • #4 16932539
    rednight20
    Level 10  
    Matrca to be replaced. best regards
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  • #5 16933578
    keseszel
    Level 26  
    It is possible that the matrix to be replaced.
    I bet not on the matrix but on flexes on the tape. Unfortunately, after unfastening one tape, the other one heats up very much, even burns.
    As you can see in the previous photos, the image on the matrix was there.
    It is now halfway down the screen, although I play it without the antenna. It is possible that I will compress and get a small indoor antenna to check the TV.
    Interestingly, the TV turned on differently when lying on its back. Several times it was ok.
    Sometimes the red LED came on and blinked 3 times. From the available information, I figured out that it was an overvoltage protection. Turning off the TV from the network and turning it back on helped.
    Videos with symptoms that are on the matrix.
    [movie: eee7df8208] https://filmy.elektroda.pl/45_1515004612.mp4 [/ movie: eee7df8208]
    [movie: eee7df8208] https://filmy.elektroda.pl/35_1515004691.mp4 [/ movie: eee7df8208]
    [movie: eee7df8208] https://filmy.elektroda.pl/37_1515004881.mp4 [/ movie: eee7df8208]

    I am thinking of replacing tabs (this is probably the name of a plate stuck to the matrix). Peel off the rest, look for ali or similar at a reasonable price and try to solder / stick. It will be ok, it will not be - difficult.
  • #6 17115711
    keseszel
    Level 26  
    I gave up. Giver.
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