Ribbon Cable Repairing.

Discussion in 'General Electronics Chat' started by R!f@@, Apr 13, 2015.

  1. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
    See the pic.

    I have carbon and even silver marker pens
    My issue is getting the insulation off. When I scrape the insulation the conductor is coming off too. I cannot get any connection with the silver as there is insulation on both sides, and scraping scrapes off the conductor too.
    How do I peel off the insulation leaving the trace ?
    Any magic method or chemical to do this ?
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    just use some magnet wire and lay it on with silicon RTV. you will waste to much valuable time and the repair may not stay repaired.
  3. nerdegutta


    Dec 15, 2009
    What if you used some Acetone to try to dissolve the insulation? Perhaps a small piece of cotton with Acetone and some gentle rubbing will do magic for you?
    R!f@@ likes this.
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    I suspect that plastic is not soluble in acetone, but that may still be worth a try.

    I think your best bet is to find a crimp fitting, like has already been used at the connector end, and attach it above the break. Then using crimp or solder bridge the break. That is, consider crimping whatever you plan to bridge the gap with under the new fitting and on top of the insulation. Then solder the other end carefully to the original fitting. I have even peeled the copper off a blank PCB and cut it into suitable strips.

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  5. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
    Have you tried melting the insulation from the cable with a soldering iron? Use a small piece of foil to protect the tip. Draw a line on (or fold and unfold) the foil as a guide for the conductor in the cable. Place the tip on either side of the section to be repaired. Once a hole is melted, fine sandpaper can be used to clean it up. Then solder magnet wire to the conductor, bridging the repair site. As suggested, some silicon can be used to strengthen the repair (tape?).
    R!f@@ likes this.
  6. hajivitra

    New Member

    Apr 7, 2015
    nice information thanks all
  7. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
    I thought about making a little hole using a needle and apply silver.
    Keep you guys posted.

    By the way connector end is carbon coated. It's the carbon that went for a walk and never came back. The lower line is gone. I scraped it too much trying to see if there is any connection. And it got worse
  8. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
    What about using needles or push pins to bridge the contacts .. Like push the pin or needle between the 2 plastic halves in the silver tracks to bridge the broken areas..Also what about using a sharp X-acto blade and out the layers or try to separate them ...Sorry just throwing ideas out there trying to help..
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