Sounds like the ball bearing fan in the power supply needs to be lubricated. I recommend a couple drops of sewing machine oil. If it's a ball-bearing fan, if you pull back the round sticker that is the label of the fan, you'll see a a recessed area silver in color, put the two small drops of oil there and spin the fan and press down on the the fan gently to work the oil down onto the ball-bearings below. Once you work the friction out of the fan by spinning it with your finger, you'll know it's been properly lubricated. Put things back together and all should be well.
thanks. I already have a new power supply on order, I'll just replace the whole unit. but thanks!