Cheers for the link. I have come across that website before but I cannot for the life of me find a schematic for the A4000 PSU in there. Is it under the "Tech Topics" links at all? I don't really want to download them all to go through them all if im not 100% sure it's in there.
Not sure, honestly this is why I convert a modern PSU and put it into the original A4000 PSU shell. They work very well and still look original.