One of the lamps was working, one was not on a two lamp track lighting fixture in my kitchen. I purchased 2 new lamps (so they would match). After they were installed, neither one worked. We tested the bulbs, they were fine. What's really strange is that when we tried to install the old lamp that was still working, even that one didn't work anymore. We are at a loss as to what could be the problem. We appreciate any help that you can give us.