It very well could have needed to cool before you moved it. But, depending on where you got it, most bulbs come with a warranty. You may want to see if you can get it replaced.

Good Luck imp:
McLuvin Reviewed by McLuvin on . Bulb problems I have a question about my HPS bulb.. i just recievied it in the mall today and went to turn it on to make sure it worked and everything was fine until i went to unscrew it and it made a pop noise then started to smoke the light stayed on and seems like it still works but there is a little piece moving around inside then bulb its self..... Any suggestions on what happen ??? Rating: 5