Ballast in fluorescent fixtures?


Old 02-12-07, 11:33 AM
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Join Date: Jan 2007
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Question Ballast in fluorescent fixtures?

I have been trying to get a fluorescent fixture to work. It has three bulbs. One on one ballast (this works). And the other two on a second ballast (these do not).
When a place a bulb that lights in the first fixture into one of the other two, it does not work. A new bulb in the two unworking fixtures does not work either.
Is the second ballast bad? How do I change it?
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Old 02-12-07, 03:22 PM
Join Date: Sep 2002
Location: welland ontario
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If it is not the tube then it is likely the ballast. Turn off the power remove the old ballast and take to supply house. They will sell you a matching one. The installation drawing for the new ballast will be printed right on the ballast.
Old 02-12-07, 04:26 PM
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Be aware, the ballast may cost as much as replacing the entire fixture. You may consider changing fixtures.
Old 02-13-07, 12:42 AM
Join Date: Mar 2006
Location: NE Wis / Paris France{ In France for now }
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sorry to step in pretty late at this time [ i was working all day and nite to dealt with one comustmer ]

for ballast most common failure useally from old age or incorrect bulb or not set in proply [ the tombstone where the floursecent bulb tip located on the end ]

genrally 2 lamp ballast is pretty common and they come few diffrent size and wattage both mangatic [ old style ] or electronic verison

but if you have very old lumiaire [ light fixure ] it may be wise to replace it than try to replace the ballast due the cost of the ballast

many Big box store or hardware store will stock very common ballast they cost anywhere from 8 buck and up depending on size and voltage [ that one part you have to watch out there is two verison of that they have both 120 or 277 v verison so watch out with that some place will stock both so just a head up ]

and if you get new ballast make sure you follow the wiring digram very carefully it can get tricky if not carefull

with new ballast make sure you use the correct bulb wattage as well as the label will tell it

if more question please do post it back here

Merci , marc

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