Contacted Fujitsu about these faulty psu's. We have now had 10 out of 35 fail in the same way in just under 3 years. To my mind this highlights there is a common issue with the psu's and that the rest will probably go the same way. I think psu's should last longer than this. I asked for a replacement psu for all the pc's that haven't already had one but they refused. Do you think this is fair under the circumstances? The warranty is up in August. Fujitsu have never acknowledged that this is a known fault, although the engineers that have come out seem to think it is.