[KiwiME]

I've had a worldwide-input switching power brick fail when I moved it from 120 ( using a step-down transformer) to 240 for the first time in the space of about 1 minute, which is what I blame it on. My various older computers that had been only used on 120 while in the states generally have had no issues with changing to the 240-ish found in NZ, but sometimes the AC filtering caps fail soon afterwards.