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From: jvb7u@astsun.astro.Virginia.EDU (Jon Brinkmann)
Newsgroups: sci.electronics
Subject: Fluorescent lamp failure mode(s)
Keywords: Fluorescent lamp failure
Message-ID: <1990Dec14.044303.9610@murdoch.acc.Virginia.EDU>
Date: 14 Dec 90 04:43:03 GMT
Sender: Jon Brinkmann
Organization: University of Virginia, Astronomy Department
Lines: 18

I've often wondered what the failure mode is for fluorescent light
bulbs.  It all came back yesterday when one or both of the U-shaped
bulbs failed in the fixture in our kitchen.  BTW, they are $10 each
(I'm tempted to trash the fixture and buy one that uses straight
tubes)!  It had been running fine for a couple of hours when it
flickered and made a ticking sound and started flickering dimly.

I measured the continuity between the pins at each end of the tube
thinking that it might be a broken pre-heater filament, but the
continuity was good.  Can anyone out there help?

Jon
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Jon Brinkmann					Astronomy Department
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