Hi,
I have an A4000 from the UK, but now I live in North America. The question is, is it possible to convert my PSU from 220V to 110V, or do I need to buy a replacement PSU?
Both are possible.
Converting would be best done by getting the original psu board out and placing a mAtx board in there using the connector of the old psu.
A replacement will work also, just set the pal to ntsc jumper.