Anyone know where I can have mine repaired, or where I can exchange mine for a refurbished unit?

The Power Supply Unit is for a Dual 1.25 G4 MDD (FW800 version)

I'm located in Wollongong, but a Sydney based repairer is fine.

Cheers Ryan.

Welcome to the MT forums.
I could be wrong, but I think repairing one would cost you a lot more than buying a secondhand unit.A new one would of course cost that much more again. Have you looked on ebay ? Or try microseconds in Sydney - www.microseconds.com.au
or Xyber computers 9906-7976
Just make sure of the Model No. when you ask.
Both of these companies do repairs as well as selling secondhand Mac parts and I have found them to both be great to do business with. The PSU is pretty easy to replace in these models and well within the scope of even a beginner ( I only say that because I don't know your level of expertise ) ;-)
Stewie

Yep Microseconds have one, however they were unable to supply a part no. which I found a bit odd.

I might give them a call to see if I can find out exactly what one they have. I don't want one of the noisy units apple offered to replace in the early MDD models.

I think it was a second hand unit also. I'd prefer a refurb if the're available.

Cheers, Ryan.

In the past I did find an American site that sold new MDD PSUs as replacement, although that was almost three years ago. They might still be out there, but at the same time...well...maybe not. I also remember them being rather expensive as well. Damn non-standard stuff!

If you are at all handy, the only difference between the old 'noisy' MDD power supplies and the new ones was quieter fans. You can replace them yourself (if you take the necessary precautions.)