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Special cleaner!

Discussion in 'Electronic Repair' started by Rono, Mar 31, 2005.

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  1. Rono

    Rono Guest

    What's the best cleaner, or mixture of cleaners
    to do cleanup of "fire damaged" T.V.'s, VCR's,
    stereos, computers, & monitors? I've heard people
    say, use spray-9, & glass cleaner, & aftershave mixed
    together! Anyone have a special mix? Rono.
     
  2. Tim Schwartz

    Tim Schwartz Guest

    Rono,

    Having had some fire damaged equipment myself, I can say there is no
    easy answer. Rubbing alcohol removes a lot of the soot very well, but
    can damage some plastics and finishes. Anything mechanical, like a VCR
    will probably have so much junk in the bearings and moving parts that
    they are not worth the effort, as cleaning will remove all lubrication.
    Also, however much cleaning you do, expect some residual odor forever,
    especially in hot, humid weather.

    To clean out a preamp of mine, which was not easily replaced, I had to
    remove the 4 PC boards, scrub them down with alcohol and rinse them off
    with water, then use a fan to force dry the boards. The metal work had
    to go in the sink with lots of hot water. The preamp took 6-8 hours,
    but was an expensive unit that was easy to take apart, and had no moving
    parts other than the switches and controls which I was able to
    relubricate.

    The soot is likely to have some conductivity, as it is mostly carbon,
    so it can cause all sorts of problems in high impedance circuits and
    high voltage circuits.

    In general, there is a good reason that insurance companies "TOTAL"
    equipment that has been through fires.

    Regards,
    Tim Schwartz
    Bristol Electronics
     
  3. Ross Herbert

    Ross Herbert Guest

    If you are in the UK, Australia or New Zealand I would recommend
    Domestos
    http://www.consumerlink.unilever.com.au/Home+Cleaning/Brand/Domestos/
    either neat or diluted 33% or so. This product contains a high
    percentage of Sodium Hypochlorite (see MSDS here)
    http://www.diverseylever.com.au/dir204/a3189001.nsf/0/86326baaea3e29e1ca256b71007d11b1?OpenDocument

    Domestos will absolutely remove all the soot from any item. I even use
    it to wash complete printed boards with the aid of a nylon bristle
    paint brush to scrub it in. Of pcbs need to be thoroughly rinsed in
    clean water and then air dried using a heat gun.

    However, Domestos isn't available in the USA since the relevant
    authorities classify it as unsafe or environmentally harmful. You can
    get some hospital grade cleansers with a much lower amount of the main
    bleach agent in it. Clorox Ultra Bleach is the one I think
    http://www.cloroxlaundry.com/bleach.shtml
     
  4. James Sweet

    James Sweet Guest


    Simple Green works very well for cleaning just about anything, just dilute
    it with some warm water and scrub gently.
     
  5. none

    none Guest

    I'd salvaged a fire damaged vcr a couple of months back.
    Entire front plastic cover was melted, everything else was fine
    besides being soot covered.
    I use a cleaner similar to simple green called mean grean.
    Much like fantastik or 409 in that it doesn't harm plastic as simple
    green can if left on too long, yet is a very effective cleaner.(You
    can get it at Wal-Mart or your local dollar store etc...)
    With the unit I salvaged I just popped of the melted front cover and
    use the control buttons on the front panel pcb to run it.( I use it
    with a security camera mostly.) Fortunately all the buttons are marked
    as to function.
    Cleaned the inside with foam swabs and cleaner, then relubed the
    mechanisms, cleaned the heads and it runs great.
    You can also get a odor killer in a spray bottle just for smoke
    damage. Try Wal-mart, Auto parts store or local hardware stores for
    it.
     
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