Replacing Flourescent Tubes and Flourescent Fixtures

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Replacing Flourescent Tubes

Buy a new tube with the same wattage rating as the old one. Standard flourescent bulbs are labeled “cool white.” Those labeled “daylight” or “color corrected” will cost more but will also render colors better. To replace a tube, grasp the old tube on both ends and twist to free the pins then slide it out of the sockets. Reverse the process with the new tube making sure that the pins are fully inserted into the sockets. When disposing of a flourescent tube, don’t break it because it contains mercury and will explode when slightly broken. Dispose of it whole or contact your garbage service for recommendations.

Replacing a Flourescent Fixture

If a flourescent light won’t light, flickers on and off or is weak, first check the tube. Make sure it is inserted properly in its sockets. Look to see if it is discolored, change the tube if necessary. On an older unit, the ballast may be bad. The ballast is a rectangular black object that is fairly heavy, you can find it by removing the cover plate behind the tubes. Before replacing a ballast however, compare its cost to the cost of a new fixture. The difference is often so small that it makes more sense to buy a new fixture. Newer units have electronic ballasts which are not replaceable. On an older flourescent fixture, the starter may be the problem. The starter is a small metal cylinder located near one of the sockets. To remove the starter, push it in then twist it counterclockwise. Take it with you to a hardware store and get an exact match.