It happened. The left fan on my Macbook Pro stated making a horrible noise, so terrible i couldn’t stand it one second. I tried opening my mac and cleaning the fan with compressed air but the noise was still there.
The only thing to do was change it. Off I went to ifixit.com and I bought a new fan with a couple of other things also, a new battery and a new superdrive since mine failed to calibrate the laser power. The invoice was pretty expensive (107$ for shipping ARG)! Warning: This procedure voids the warranty.
