Ummm, nevermind. I figured out the problem. It is NOT dead. It was user error, and I feel like an idiot. It was somewhat obvious... it was the trigger line causing my problems. I disconnected it, and now it comes on fine. I'll play around with it some more to get the trigger to work properly (my APC power conditioner uses one as well, and the 990 has 2 trigger outputs, so there might be some fighting there).