Changed the bulbs (T8s) and still nothing. I remembered that one of the fixtures that's hidden behind the overhead door, so I never see it, had a bad ballast. (I never replaced it because the door hides the light - I blame the electrician for putting it there, but so it goes). So, I'm assuming that I've got 3 lights out because of bad ballasts. I bought some replacements via eBay on Monday, so I'm planning to swap them out Friday. But ask, is this normal for those "garage light specials" sold at local home centers? Anyone else have similar problems? Or did I have a run of bad luck?
The lights were bought and installed about 7 years ago. They are NOT used all the much. Not as much as other fluorescent fixtures in the house.