My power brick also died today, but I am not sure warranty claim is worth the trouble. I have a spare IBM ThinkPad power supply, and empeg seems to like it.

Dragi "Bonzi" Raos
Zagreb, Croatia
Q#5196, MkII#80000376, 18GB green
_________________________
Dragi "Bonzi" Raos Q#5196 MkII #080000376, 18GB green MkIIa #040103247, 60GB blue