Fwd: [GLLUG] Coffee and Electronics

[pdwald]

A non polar solvent should work. It is used in hexane in organic chemistry
lab to clean non polar stuff. Alcohol is less polar than water, but a lot
more polar than hexane. WD40 is not a good choice, it would be best to use
Carb Cleaner or even better to use Brake Cleaner; but all of them would
leave a residue. The best bet as far as solvent goes is to use Electronic
Contact Cleaner (which can be bought at your local Radio Shark store).

On 5/3/07, Richard Houser <rick at divinesymphony.net> wrote:
>
> Rubbing Alcohol is only guaranteed to be isopropyl alcohol in this
> country.  Elsewhere, it could either be ethanol or denatured alcohol
> (can't recall which) plus a contaminate to keep people from drinking it.
>
> Alternatively, WD40 might be useful depending on the materials.  WD40 is
> ideal for washing many electronics.
>
> Michael Rudas wrote:
> > On 5/2/07, Dan Ryan wrote:
> >
> >> Take a bit of isopropyl alcohol (not rubbing alcohol; it contains
> carnuba
> >> wax and that will leave a residue.)
> >
> > WRONG!  Rubbing alcohol is just water and 50 to 70% alcohol, no wax...
> > Alcohol is a poor solvent for sugar, anyway.
> >
> > Speaking as a 50-year-veteran electronic repairman/technician, a much
> > better solution is distilled water with some ammonia in it (a few
> > drops per ounce is enough)-- a good surfactant that leaves no residue.
> >
> > The bigger problem is removing the keycap, something that an
> > inexperienced person is gonna have a lot of trouble doing-- unless you
> > know the trick (a picture would sure help here):
> >
> > 1.  Take two standard paper clips and bend them straight.
> >
> > 2.  Bend square hooks near the center of each one so that it resembles
> > a "U" with a square bottom about 1/2 inch wide and very long tines.
> > This is your new keycap removal tool!
> >
> > 3.  Grasping one clip in each hand, slip the square bottom/center part
> > of each under diagonal corners of the keycap until the tines touch the
> > edges of the key.
> >
> > 4.  Pull straight up, gently (a very slight rocking motion may help),
> > with even tension on each clip, until the cap pops off.  "Gentle" is
> > the word here-- you don't want the cap flying off to $DIETY knows
> > where...
> >
> > 5.  Use the ammonia+water solution on a slightly-moistened cotton swab
> > to clean as much of the coffee off as possible, but not moist enough
> > to flood the keyboard internals, if possible.
> >
> > 6.  Mop up with a dry swab.
> >
> > 7.  Repeat steps 5 & 6 a couple of times, at least, with clean swabs.
> >
> > The keycap should snap right back on when you are done, and things
> > should be OK-- most modern keyboards are at least semi-shielded
> > against spills.
> >
> > -- Mikey
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>
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