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Blaupunkt BA43F4142LEB Vertical Lines Issue: Which COF-Board Lines to Disconnect?

abramkyr1995 795 6
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  • #1 21647662
    abramkyr1995
    Level 8  
    Posts: 45
    Help: 2
    Rate: 6
    Good evening my friends,

    I have a TV 43" of BLAUPUNKT MODEL: BA43F4142LEB.

    It has vertical lines on LCD. The left panel is off while only with right panel it plays normal.

    Which lines I have to cut off on COF-BOARD to play normal?
    Attachments:
    • blaupunkt_43.JPEG (1.3 MB) You must be logged in to download this attachment.
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  • #2 21648338
    kudla gerard
    Level 15  
    Posts: 91
    Help: 8
    Rate: 40
    Try it with CK signals, but don't cut, just try to tape on the TCON.
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  • #3 21648470
    abramkyr1995
    Level 8  
    Posts: 45
    Help: 2
    Rate: 6
    >>21648338 Yes, I need the lines, which pins.... 1 to 8 etc
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  • Helpful post
    #4 21648880
    kudla gerard
    Level 15  
    Posts: 91
    Help: 8
    Rate: 40
    On the left side of the tcon you have pads CK1-CK4 measure with a meter which tracks are responsible for these signals on the right side of the tcon and using the test method tape the connections to the matrix with thin tape , it is difficult to say which pin to disconnect you must try .
  • #5 21653939
    abramkyr1995
    Level 8  
    Posts: 45
    Help: 2
    Rate: 6
    >>21648880 I did it. Now it's playing normally but have some lines yet. Look the image below.

    Added after 46 [seconds]:

    Img2
    Attachments:
    • blaupunkt_43_2.JPEG (1.38 MB) You must be logged in to download this attachment.
  • #6 21653941
    abramkyr1995
    Level 8  
    Posts: 45
    Help: 2
    Rate: 6
    >>21653939
    Attachments:
    • Blaupunkt BA43F4142LEB Vertical Lines Issue: Which COF-Board Lines to Disconnect? blaupunkt_43_3.JPEG (1.78 MB) You must be logged in to download this attachment.
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  • #7 21653966
    Telo
    Service technician RTV  
    Posts: 13119
    Help: 1522
    Rate: 2366
    A colleague is aware that this is not working in the long run and additional wonders may come out in the image after time.
    What type of matrix is it?
    For yourself it's ok, but for sale, oh, not nice....
    I understand that the future customer will be informed of the damaged matrix.
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Topic summary

LABEL_AI_GENERATED
A Blaupunkt 43-inch TV with model BA43F4142LEB shows vertical lines on the LCD, with the left panel disabled while the right side still displays normally. The suggested repair approach is to identify the CK clock signal pads on the T-CON board (CK1–CK4), trace the corresponding tracks, and use the tape method to isolate the matrix connections instead of cutting lines directly. After applying the method, the TV works normally but still has some remaining lines. It is noted that this type of panel repair may not be reliable long term and additional image defects can appear later.
AI summary based on the discussion. May contain errors.
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