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Posted to sci.electronics.repair
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Will Deoxit on a circuit board cause problems?
wrote:
On Tue, 06 Feb 2018 16:43:38 -0800, Jeff Liebermann
wrote:
On Tue, 06 Feb 2018 16:05:11 -0600, wrote:
Will Deoxit on a circuit board cause problems? In other words, is it
conductive if it's touching components?
Think about it for a moment. If a switch lube were conductive, and
you sprayed it on the switch contacts, one might expect the switch
lube to short out the switch. That would make it a very bad switch
lube. Therefore, one might suspect that NOT shorting out the switch
which Deoxit is trying to lubricate might be a formulation
requirement. In other words, it better not be conductive.
Deoxit is mosly mineral oil (saturated parrafin oil) which will
evaporate, but very slowly. You'll need some kind organic solvent to
clean off the oil residue from the PCB. If you using Cramolin Red
instead of Deoxit, there's some oleic acid in the mix as an oxide
remover, which will very slowly corrode copper and must be removed
from the PCB.
I guess I did not explain that real well. Of course it's not conductive,
but what I meant is whether there could be water in it, meaning till it
drys it could be conductive via the water. I know most chemicals these
days cant contain solvents which are air pollution. In fact a mechanic
friend told me that auto paints no longer contain laquer thinner, and
some are even water based.
Some areas or states might have a ban on lacquer. Not popular like once
was, but common in touch up spray cans. Enamel spray with hardener is
awfull to breath.
Knowing it's mineral oil eliminates that worry. I've never seen that
Cramolin Red, but I'll be sure to never buy it. Deoxit seems to be the
best anyhow, so I dont buy anything else. Years ago, I used Radio Shacks
contact cleaner most of the time, which usually worked ok, but that is
no longer available and Deoxit is better anyhow. It's a little on the
pricey side, but I find myself using less of it than I used with the
sprays I used in the past.
Thanks for the help.
if you want to clear boards, use a plastic safe residue free electronic
spray.
Greg
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