I would try like hell to get the warranty. But you need help fast. Go to an elactrical supply store. One all the electrians go to not some home place. They sell ballast repair kits. You probably just blew a capasitor. The kits aren't too bad in price but have everything you need to replace all the part in yours. Make sure you tell them it's an HPS ballast. Unplug and open the box. If you don't see a burned part just replace them one at a time. It won't take long and you will be suprised at how easy it is to build one. I keep one around at all times just in case. It even comes with a regular bulb. When they took my stuff they didn't know what it was so they left it for me. Hurry to the store if you didn't get your light local.