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Incandescent light bulbs are officially banned in the U.S.
(www.digitaljournal.com)
This is a most excellent place for technology news and articles.
They generate lots less heat that an equivalent incandescent bulb. It's most likely the dirty power problem you've described.
They do. But incandescent bulbs don’t have circuitry prone to heating failures. It’s just a filament.
So it’s not an equivalency thing.