In my bedroom I have a standard 12" flourescent light. During warm and
mild weather it works normally. During cold weather, when I turn it on,
it glows dimly but won't light until I turn the switch off and on a few
times. When I get up in the morning it lights normally. After that it
acts up all day. ??????
If it gets below 50 degrees F it's completely normal for indoor flourescent
lights to start having problems and not start at all at around 40 degress F,
assuming your room temp ature is ok I'd look for a starter on the fixture
it's a small round can and replace it if your fixture has one if not or if
that does not fix the problem replace the bulb. Suspect the bulb if it is
very dark at one or both ends, what happens is the mercury settles at the
ends and can no longer vaporize and start the chemical reaction that
The tube is cold, resulting in lower vapour pressure, making it harder
Electronic ballasts can get around this by putting more power into the
tube when it's being started, then easing off once the tube hits normal
As you say, magnetic ballasts are pretty basic, so they can't vary their
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