I've used quite a few SPI/FSP 300W 120mm PSUs. They have been whisper quiet. However, the Power Man 350W 120mm PSU that came in my InWin case is quite audible at all times. Warmish air is coming out ...

So just a couple of days ago, I started hearing chirping noises from my PSU fan. Does this mean it's giving up soon? I've read it's possible to open it up and replace the fan, but I'm too lazy, and ...

1] Does the PSU fan spin on startup? Some users reported that their Power Supply Unit fan spins on startup but stops after some time. Others reported that the PSU fan does not spin even on startup.