The power supply on my 2008 Mac Pro 3,1 has failed. I know it has failed as I have another identical Mac Pro & swapped the power supplies back & forth & the fault followed the power supply. I need to find a new power supply. am reluctant to spend £150 on a used system pull which is all I can find on eBay. I am also reluctant to spend about £240 plus import taxes on a new unit from the US as even if it was new any warranty claim would be problematic. A word of warning. I tried to get my power supply repaired by a seller on eBay http://www.ebay.co.uk/usr/cpsupport but after sending them my power supply they not only didn't repair it but refuse to return it. I eventually got eBay to refund me the money that I paid up front for the repair but I haven't got the power supply returned so that I could get it repaired somewhere else. These crooks are no longer selling their repair service on eBay so I have little hope of getting the power supply back short of reporting them to the police for theft.