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jripani
Oct 17, 2009, 02:11 PM
How can you tell a ballast is going bad in a 4 foot fluorescent light?

tkrussell
Oct 18, 2009, 03:26 AM
If the lamps are still working, and one end of the lamp(s) is blackened, the ballast is defective. You can check the manufacturers website, and look for troubleshooting tips.