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Old 14th Apr 2019, 3:09 pm   #143
The Philpott
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Join Date: Aug 2016
Location: Colchester, Essex, UK.
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Default Re: The demise of the fluorescent tube

I believe CFL's have two heaters. If one is o/c the lamp may still strike but will take longer to warm up- and will look lopsided during warm-up.
As the heater filaments are mechanically quite rigid what you might have is a break in the filament- which sometimes manages to arc weld itself back together...then breaks again. This could give rise to inconsistent start-ups.

Dave
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