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Old January 16th 05, 09:19 PM
Dave Platt
 
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In article ,
RST Engineering wrote:

I have battery leakage from a couple of AA batteries that has corroded
about an inch square of surface on a printed circuit board, with the
corrosion also on the little "trails" that lead from one component to
another.


A slushy paste of baking soda and water left on the corrosion for a few
hours neutralizes the goop that the battery squirted onto the board. Rinse
with distilled water and then any good contact cleaner brushed over the
area.


The baking-soda slurry idea is a good one if the batteries are the old
carbon/zinc type which use an acidic electrolyte (corrosive as all get
out, unfortunately).

Alkaline batteries have an electrolyte which is (tada!) alkaline, and
using baking soda (also alkaline) won't help. Fortunately this
electrolyte is rather less corrosive to metal than the acid from an
old "heavy duty" battery, and it can usually be just washed off. I'd
suggest warm water with perhaps a small amount of a mild surfactant
(Simple Green or something like that), then the distilled-water rinse,
shake dry, and perhaps use the contact-cleaner trick as a final
cleaning to remove any oils present.

--
Dave Platt AE6EO
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