The rubbery stuff may be conformal coating. I had to use that stuff
when I worked in the Motorola factory when Ford wanted their CB radios
to be gunked up with this stuff.
Steve WA9JML
On 7/17/2017 8:22 PM, Bwana Bob wrote:
Yuk! I've seen brown crud on the foil side of the circuit boards my
Paragon and another one that I worked on. In those cases the crud was
excess soldering flux. I cleaned it off with isopropyl alcohol and
cotton swabs. The white stuff may be some kind of oxidation or
corrosion. Mold would be black.
73,
Bob WB2VUF
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