G'day A4000 power supplies are few and far betwween in oz you can buy a stepdown transformer rated at 500watts and hook this up to your 110volt power supply and your miggy will run nicely or you can purchase an atx power adaptor from Amigakit and use an atx power supply this will also do the trick Matt was quite correct about the NTSC to PAL jumper switch change it and Bobs your uncle.
cheers