19-10-2013, 09:27 AM
A classic foul up I've had to work around over the years has been the use of sleeve bearings in the PSU cooling fans. You turn on the computer and they start to howl. Easy enough fix, peel back the manf label to reveal the sealing plug, pop open and add a few drops of oil to the bearing shaft and all is ok. The pain is getting the fan out of the PSU in the first place, plus the heat coming off the PSU evaporates the oil quite quickly so its usually a one a year job. I now buy PSUs with proper ball races in the fans.
