Hi. I have a Mac Pro A1289 that randomly shuts off. I suspected the PSU unit was failing and a search of the forums yielded a few with the same issue that turned out to be the PSU. I took my unit apart and realised that it wasn't the PSU itself but rather the fan in front of the PSU that wasn't working, hence the PSU was heating up and shutting off due to its thermal protection. Easy fix i thought, just get a replacement fan and i'm done. Easier said then done. A search for the fan unit has yielded zero results. I'm able to find the PCI fans, the cage fans etc, but no one seems to be carrying the PSU fan. Anyone has any ideas where I can get the replacement fan or has purchased one before and can point me in the right direction? Any advise appreciated. Thank you!!