While the Corasair CS550M is a good power supply unit (PSU), the fan or more specifically the fan bearing is quite poor. Even though the fan is temperature controlled, this results in a annoying clickering noise. Therefore one might want to replace it with a better quality, more quite fan.
In order to do so, you will need the following tools:
- soldering iron
- shrink-on tube
- diagonal cutter
- flat nose pliers
- convenience: cable stripper
However note that the used high power capacitors store enough charge to shock you even several minutes after disconnecting the PSU. So you should wait for about 10minutes after disconnecting the PSU and even then watch out not to touch the pins of the capacitors.
If you set-up everything correctly, follow these steps to silence your corsair:
now you can re-asseble the PSU housing and optionally attach the tacho cable to a free plug on your mainboard to monitor the PSU fan.