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Yes, using a 0.1µF instead of 0.047µF is generally okay as long as it's a proper safety-rated cap (X2 or Y2 depending on placement). The tolerance on those values is wide anyway. More important is making sure it's rated for across-the-line use, not just general purpose. Good call preemptively replacing that tiny 2200pF too... once you've seen one go off like a smoke bomb, you don't forget.
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