Flex cable need help fixing it

Discussion in 'General Electronics Chat' started by Aaron Sifford, Dec 28, 2015.

  1. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    I have a problem i have 55 inch led tv that was damaged due to having soda spilled on the front of the screen when I took apart of the tv i found the problem it was just corroded near the flex cable going into the screen.
    here is IMG_20151219_234324937_HDR (1).jpg a picture of the damage maybe some one can tell me how to repair the damage please. plus the traces are ruined to someone please help on top on this i need to know what pitch this flex cable is thank you
     
  2. nerdegutta

    Moderator

    Dec 15, 2009
    2,519
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    Hi, and welcome to AAC.

    This looks nasty. It will not be easy to repair. One thing you could try, is to gently wipe the traces with Acetone, and solder on thin enameled copper wires. The wires need to be coated, or they will short when they come in contact with each other. You need steady hands, a thin solderiron tip, and a good eye.

    If you mean the width if the traces with pitch, i think it is 8mils or 6 mils. Just guessing.

    If you solder anything wrong, or get a solderblob, you could damage the whole thing. Be warned, and good luck.
     
  3. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    what if i could get another flex cable to go over top the other cable split the connections and solder a new wire to the connections on the bottom parts on the board.
     
  4. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    do u know how to take off the flex cables protective coating so i can repair the damage
     
  5. KJ6EAD

    Senior Member

    Apr 30, 2011
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    In addition to the obvious corrosion, often liquid spills damage vias as well. If that's a small front panel board, it may be better to try getting a replacement. With some brands this is not too difficult or expensive.
     
  6. nerdegutta

    Moderator

    Dec 15, 2009
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    If you have some liquid that dissolves the coating, you could try to rub it gently off with a q-tip.
     
  7. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    its the board that runs into lcd screen no way to replace
     
  8. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    i dont no what kind of liquid does this
     
  9. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    this board is the board that goes into the tv screen i dont see away to get another board
     
  10. nerdegutta

    Moderator

    Dec 15, 2009
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    Acetone, or another liquid based on the same. But it will take time. And there will be fumes...
     
  11. Aaron Sifford

    Thread Starter New Member

    Dec 28, 2015
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    thank you very much
     
  12. nerdegutta

    Moderator

    Dec 15, 2009
    2,519
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    You are welcome, and good luck.

    Some other members might stop by with other ideas, but that's what forums are for. :)
     
  13. KJ6EAD

    Senior Member

    Apr 30, 2011
    1,425
    363
    You probably wouldn't recognize the connector at the other end of the flat flex as a connector either. Have you tried capitalization and punctuation yet?

    i dnt spk txt
     
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