when track lighting suddenly stops working, my electrician told me it's probably the transformer. But where can I buy a transformer that will match? The fixture doesn't look much different from one I saw on display at lowes, but they didn't have the components for sale individually. I don't see a brand name on the fixture, but there are five 20-watt halogen spots.

http://www.lowes.com/lowes/lkn?action=productDetail&productId=25560-24969-800RALHDW150N&bc=c