Apple MacBook “Moooing” sound identified and explained.

A brave Apple MacBook owner took it upon himself to find out exactly where the “Moooing” sound heard in a lot of the new MacBooks is coming from. By taking apart his brand new Apple MacBook computer and removing some of the casing, he was able to confirm everyones suspicions that the sound is indeed coming from the system’s fans.

It seems that the fans turn on at a specific temperature, like they are suppose to, but only stay on for a few seconds, as the temperature very quickly drop by a few degrees. The “Moooing” sound that is heard is produced by the fans turning on and airflow starting to move through the MacBook enclosure.

It’s entirely possible that Apple had intended to make the fans hyper-sensitive, to avoid draining extra battery power, and to keep the MacBook as quiet as possible. However, if this is something that really is a problem, Apple should be able to fix it by changing the temperature at which the fans go on or off, with a firmware update.

Update: Here is the discussion of this issue over at Apple.com