Most often during peak summer loads, voltage sags will seriously dim my
fluorescent lights. They are much more sensitive than regular bulbs.
As to your problem, the cheapest and simplest thing to do is swap the bulbs
first. Last time I had a bad ballast, it was cheaper to buy a new shop-lite
than to buy a ballast for the old one.
Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD"
>>> To reply, remove the TRABoD! <<<
Kaplow Klips & Baffle: http://nira-rocketry.org/LeadingEdge/Phantom4000.pdf
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26-October, 2001: A day that will live in infamy
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When Fascism comes to America, it will come wrapped in an American flag.
Usually in a dual or quad 4-foot fixture two bulbs going very dim is
from one bulb burning out. The other bulb is usually close to burning
out, so it is a good idea to replace both bulbs.
For confirmation of this diagnosis, look for severe darkening/blackening
that usually occurs at one end of the bad bulb.
Sometimes one bulb of a pair goes dim and the other goes completely out,
and sometimes both are very dim with one dimmer than the other, and the
bad one is sometimes the brighter of the two.
Less likely: Bad contact - try twisting the bulbs to scrape corrosion
off the contacts or seat them better if replacing them both gives similar
- Don Klipstein ( email@example.com, http://www.misty.com/~don/ltrouble.html )
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