How Do You Tell If Fluorescent Light Ballasts Are Bad?

By Staff WriterLast Updated Mar 30, 2020 6:16:29 AM ET

If fluorescent light ballasts have gone bad, they might become dim, buzz, change color or go through fast blinking cycles. All parts of the light should be inspected for default before replacement. A multimeter can be used to make certain that it is indeed the ballast itself that has gone bad.