I've noticed -- in my case with an automotive lighting junction box for the brake lights in a 1988 Toyota Camry -- that burned traces are not only from high current (although that's the usual cause), but can wear out over time. I'm not sure if that's from normal use or from slight periodic surges. Actually, in the case I'm talking about, it was more the connector pins which had problems, and they weren't corrosion based, but rather from current. YMMV.
Your wife has to give you big kudos for sleuthing out that fix. I have a pretty handy husband, but in my house, that would have been a $700 repair bill hit. It's nice to hear a fix-it story where engineering rigor and diligence not only took center stage, but paid off in spades.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
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