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cleaning contacts

Discussion in 'Electronic Repair' started by Djordje Dragic, Jan 20, 2004.

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  1. What is better for cleaning computer chip&socket contacts: isopropyl
    alcohol or Kontakt 60 spray? (Some people told me alcohol is great for
    cleaning PCBs.)
     
  2. Joerg Hau

    Joerg Hau Guest

    Hi
    For cleaning (= wash off grease, dust etc), yes, but isopropanol won't
    remove any oxide from contacts.

    Kontakt 60 is for the crude stuff, i.e. "well visible" oxidation.
    After treatment with K60 & waiting a day, you may want to wash the
    residues off with Kontakt WL (cleaning solution, AFAIK mostly
    composed of isopropanol and similar alcohols).

    Kontakt _61_ is probably what you want - against minor oxidation or
    for preventive maintenance. Can be left in the device. I've used it
    for years with good success.

    Cheers + HTH,

    - Joerg


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    joerg dot hau at swissonline dot ch * Lausanne, Switzerland
    http://www.mysunrise.ch/users/joerg.hau/
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  3. Orange

    Orange Guest

    Could you tell me if Kontakt WL MUST be used after Kontakt 60?
    Does Kontakt 60 "eat" metal?
    I'll try to find that, thanks.
     
  4. Joerg Hau

    Joerg Hau Guest

    Hi
    Hmmm ... the "usual sequence" is K60, then WL, then K61. A washing
    step in between makes sense; you may want to remove the "crud"
    dissolved by K60 somehow. However, (1) the instructions on the K60
    bottle do not mention this step explicitly, and (2) any compatible
    solvent like Isopropanol should IMHO do.

    As for the corrosion, according to an old app note there may be some
    corrosion problems if you omit to remove excess K60. From that, I
    _think_ K60 is aggressive, while K61 is more of a protection fluid.

    Cheers + HTH,

    - Joerg


    --
    joerg dot hau at swissonline dot ch * Lausanne, Switzerland CHANGED
    URL: http://homepage.sunrise.ch/mysunrise/joerg.hau/
    "All standard disclaimers apply".
    remove "nospam." from my address to reply
    (this became necessary due to increasing SPAM)
     
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