Emulator Funkiness

One of my beloved emus has started acting up recently. At first it just seemed like the lamp would, for no reason, lose its arc. Resetting the fixture remotely (or via the power switch) seemed to fix it for a while. Now it appears as if there might be something wrong with the power supply.
Before I get into the details, I should say that it has a bran new HES lamp with less than 10 hours of use on it.
What happens now, when you power the fixture up, the lamp strikes, runs for a few seconds, maybe a minute tops, then the lamp goes out. If you watch the LEDs on the back of the unit, the Power led dims slowly until its out. Then it sits there until you power-cycle it. Its almost like the power supply is intermittent. Any idea where to look? Is this a common failure mode?
I haven't had a chance to crack the unit open after the gig I had this weekend for it, but if anyone has any idea where to look, i'd be grateful.

Thanks,

Jeff
Bigdarkspot
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