Larger components like electrolytic capacitors are often secured to the
circuit board with some sort of adhesive. Originally, it is white and
inert. However, with heat and age, some types decay to a brown, conductive
and/or corrosive material which can cause all sorts of problems including
the creation of high leakage paths or dead shorts and eating away at nearby
|NotTaR of Television Sets : Decayed glue in electronic equipment
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The bottom line: Most of the time, this stuff serves no essential purpose
anyhow and should be removed. A non-corrosive RTV or hot-melt glue can be
used in its place if structural support is needed.