See, that's what i thought, and went ahead and ordered a new PS. Now I've got people telling me it's a failing HD... and I'm seeing no other indication of that.
Who is the mother of all those people?
That said, though, the impeller fan in the power source inhales all KINDS of kwapola over time.
If you intend to swap parts in, I for one would definitely start w/the power supply.
Just fwiw, best results, and FReegards to you!