PSU keeps blowing fuses. Any ideas?

..

No ideas on the issues you are having, but I can say you shouldnt have a problem running your current PC with that PSU.

Is this the internal PSU fuse, or an external fuse in your house?

Either way, next thing i'd do is unplug everything from the PSU so it only has to power itself, then try again.
If it still pops, there is a short somewhere, either in your cables inside the computer, in the PSU itself, or if it's a house fuse it could be in the power cable to the PSU.

Thanks for the help guys, il have a good look at it again tommorow.

Could it be a bad diode in the rectifier or a bad high voltage transistor? Do the big high voltage capacitors ever short and not explode?