Hi All,
I'd use isopropyl alcohol and a toothbrush.  Don't use acetone, toluene,
xylene or spray detergent. Starting with a corner or side, loosen the crud
with a toothbrush dipped in a cup of alcohol and work towards the opposite
side. Flush the dirty crud laden liquid away by keeping the clean end high
and use small squirts from a squirt bottle to flush debris down and away.
Do both sides at once. An air hose parts cleaner nozzle can also move away
the dirty liquid. Use with a respiratory mask and a set of goggles if you
use compressed air to clean it.  Do it outdoors. Another option is to wash
the board with an alcohol filled spray bottle. Remember, the liquid will
have lead salts dissolved in it, so don't forget the mask. Shower
afterwards.  Remember the alcohol can burn, don't get yourself so wet you
can't step back from a 'problem'.  (read FIRE) Don't let the fumes build up
in a small room or space, as they can burn and explode. Stay away from the
chlorinated solvents, as they don't remove much in the way of corroded lead
or copper salts, just rosin flux and oils. They are more toxic to your liver
and will stay dissolved in your body fat for years.  If the part you are
cleaning is loose after the cleaning, it wasn't really hooked up anyway!

Let the board dry thoroughly for at least a day before you power it up.  A
good spot for drying, after the gross amounts of liquid are gone, is the
warm spot over a television or computer monitor.

What have you got to loose?
kapnkid


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