It's possible, but this is also symptomatic of a bad lamp, which will cause both lamps on the same ballast not to work or to flash briefly. Try putting the bulbs that are working in these sockets just to make sure there is not a ballast or socket issue. If they work try putting one 1of the bulbs that was not working before in the sockets that are working. If both bulbs fail to light you know that that is the lamp that is the problem. If not try the other lamp as you may only need a single replacement lamp.