i pushed the fan and it stopped for awhile (noise)
Well I've hear problems about this happening on my PSU, although it hasn't happened to me yet. I've heard reports of the fan hitting the grill. A simple solution would be to take off the grill and put some small washers in between the grill and PSU. This does not require opening up the PSU (at least on my model), it is cheap, and it is quite possibly the solution.
still a bad idea to opena psu up though
those caps hold charge for years
And what holds the washers in place
???