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Advice Please: Removing Smoke Damage From PCBs

Discussion in 'Electronic Basics' started by Darren Harris, Jun 25, 2004.

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  1. Can anyone tell me the best way to clean "soot" from printed circuit boards?

    Thanks a lot.

    Darren Harris
    Staten Island, New York.
  2. Ken Taylor

    Ken Taylor Guest

    If it's after a fire involving plastics, I'd use an ultrasonic cleaner to
    remove as much of the toxic (and corrosive!) residues as possible.

  3. John Larkin

    John Larkin Guest

    Scrub with soap and water, rinse, then bake dry. Some people advocate
    running them through the dishwasher. Non-potted transformers and
    relays may not like getting wet.

  4. Art

    Art Guest

    Final rinse with distilled water to assure no chemical or mineral residue
    from the tap water. Either bake dry or let air dry for at least three days.
    Then follow up with a good inspection before attempting to implement use.
    Make sure there are no residue carbon (Smoke & Soot) traces between
    components that can produce a resistor like function with application of
  5. Ross Mac

    Ross Mac Guest

    Freon should clean it up nicely if you have a source...Ross
  6. Some people advocate
    Use a dishwasher detergent WITHOUT "rinse aid", and as someone
    else already suggested, final rinse, by hand, with distilled or
    deionized water and blow dry.

    Watch out for non-hermetically sealed components of all kinds;
    non-potted transformers, relays -- but also switches, jumper
    blocks, connectors, keypads (&c &c)
  7. Thanks everyone for all the advice.

    Darren Harris
    Staten Island, New York.
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