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kalee20 · 9th Oct 2017, 7:40 pm

Dunno! Maybe one of the CFL's has an across-the-line RFI suppression capacitor, and the other doesn't? What happens if you bung a 0.1uF X capacitor across the lampholder contacts (no bulb) and switch on?

9th Oct 2017, 7:40 pm	#4
kalee20 Dekatron Join Date: Feb 2007 Location: Lynton, N. Devon, UK. Posts: 7,088	Re: Strange phenomenon involving CFL bulb Dunno! Maybe one of the CFL's has an across-the-line RFI suppression capacitor, and the other doesn't? What happens if you bung a 0.1uF X capacitor across the lampholder contacts (no bulb) and switch on?