Remove the bulbs and open up the fixture as shown in photo 1.
T8 fluorescent light fixture ballast.
Some older types have starters too.
It is important to follow the wiring diagram on.
If you re having problems with a fluorescent light turning on and you have tried the simple solutions the problem could originate with a bad ballast.
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All fluorescent light fixtures consist of at least lamp s lamp holders ballast and internal wiring.
The ballast is used to create the voltage and current necessary to start and illuminate the fluorescent lamp.
Confirm that the new ballast matches the old one photo below and then install it as shown in photo 4.
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How to replace the ballast of your fluorescent light fixture replace a t8 fluorescent light fixture ballast.
However an electrical ballast can be checked quickly and easily with the right tools.
A fluorescent fixture requires a ballast to send the proper amount of electricity to the fluorescent bulbs.
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Photos 2 and 3 show how to remove the old ballast from the fluorescent light fixture.