As the fan bearings wear, the fan blade will start to wobble and make noise from the blades touching the frame of the fan. In some instances, the fan can lift from the frame and rub against the case or internal components. Fan blade hits internal components. Any internal wiring or other parts that come in contact with the spinning fan blade will result in noise. Best thing to try: Get a high quality cooling pad to set the computer on. The fans in the cooling pad should help cool the computer so that the internal fan does not need to run fast to keep the CPU cool.
If you still have the noise with the cooling pad, the most likely issue is a failing fan. If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended. Please note: Do not post advertisements, offensive material, profanity, or personal attacks.
Fix Fan Noise After Upgrading Mac OS Catalina. - Catalina OS Guide and Tips
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HDD Fan Control
Contact Blue Monkey. The one in my music studio is very quiet, even when recording in Logic X. The one in my office has been running the fan quite loud lately. I tried resetting the SMC several times. No fix. It's not abnormally warm in my office, 70 degrees at this time. I'm not running any CPU heavy programs. At this time I only have iCal and Microsoft Word open and the fan still runs loud.
About fan noise
This is out of the ordinary for this machine and I don't recall ever hearing this much noise on my music studio Mac Pro. Both Mac Pro's are from the same time period Any idea what could be causing this and how to fix it?
Last edited by Blue Monkey on Fri May 10, pm, edited 1 time in total. Some process in the background making the fans go. A healthy coat of dust will make your fans try harder to dissipate the heat.