Well I seem to have started to get to the bottom of it.
I plugged one of the fans straight into the unit and it was fine :)

I presume that I am having problems due to the way I have wired up my fans.
I have paired them up using 3 pin to molex converters. IE each fan (where needed has a 3 pin to ...

I'm using the LCDC which came on the CD with the unit

Drivers seemed fine but I re-installed them anyway.
For some reason thedisplay now thinks it's an mx2 series and only has 2 lines of text :(
Not too bothered about that as I really want to get the fans working first :)

Is there maybe some noob setting I have missed in the software that I need to do ...

http://kustompcs.co.uk/acatalog/info_2532.html

SilenX 80mm 9 dBA Fan

Specifications:
Dimensions: 80 x 80 x 25mm
Input: 12V/1.2W
Speed: 1300 RPM
Air Flow: 15 CFM
Noise Level: 9 dBA
Three Pin Connector - speed monitoring not enabled
Four Pin Connector

I can test if the unit is faulty as a friend ...

oops sorry lol!

They don't power up at all.

Just bought an mx422 and I'm having problems with the fans.
I've got the jumper set to the far left as it shoudl be, the floppy pwer cable is plugged in (definately works as when used to power the A: drive it works fine) and have 4 fans plugged into the sockets.
The fans also definately work fine as ...