On 2/20/2012 6:11 PM, Jennifer Murphy wrote:
I flicked the light switch in the bathroom and only one of the 4
fluorescent light bulbs came on. After about a minute or so, the other
three came on. I turned it off and let it sit for 10-15 minutes and
tried it again. All 4 came right on.

Should I replace all 4 bulbs or is it likely the ballast (is that the
right word) that is going bad?

Sorry, I read it, or at least interpreted it backwards. (dyslexia or
something) That sounds like something flaky with an electronic
ballast.(T-8) Doesn't seem likely to occur with a pair of magnetic
ballasts (T-12)
May just be an anomaly, see if they continue to work properly.