I have 3 Fluorescent fixtures. I know the outlets are good because I tested them. 2 of them don't work at all. They are all 2 bulb 4' fixtures. One I got about a year ago but rarely used. Only one bulb works and both bulbs are new. All the bulbs are 1.5" in diameter. Why are they not working I do not want to change to LED lights since I have 10 more bulbs besides the ones in the fixtures. Thanks.