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Apple Computing Products:
macOS - Notebook Hardware
Unnecessary fan noise
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<blockquote data-quote="cwa107" data-source="post: 1421582" data-attributes="member: 24098"><p>The bearings in all fans break down after some time, and they get noisier as they age. You may want to run the Apple Hardware Test, which should indicate any abnormal behavior for the fans:</p><p></p><p><a href="http://support.apple.com/kb/HT1509?viewlocale=en_US&locale=en_US" target="_blank">Intel-based Macs: Using Apple Hardware Test</a></p><p></p><p>Secondly, I'd also recommend a PRAM and SMC reset:</p><p></p><p><a href="http://support.apple.com/kb/HT3964" target="_blank">Intel-based Macs: Resetting the System Management Controller (SMC)</a></p><p></p><p><a href="http://support.apple.com/kb/HT1379" target="_blank">Resetting your Mac's PRAM and NVRAM</a></p><p></p><p>Finally, the fans may run faster if the intake tracts are clogged with dust. iFixit.com has disassembly directions for most Mac models. Generally, you can take off the bottom panel and blow it out with some compressed air (be sure to hold the fans captive while you do this as it's generally a bad idea to overspin them).</p></blockquote><p></p>
[QUOTE="cwa107, post: 1421582, member: 24098"] The bearings in all fans break down after some time, and they get noisier as they age. You may want to run the Apple Hardware Test, which should indicate any abnormal behavior for the fans: [url=http://support.apple.com/kb/HT1509?viewlocale=en_US&locale=en_US]Intel-based Macs: Using Apple Hardware Test[/url] Secondly, I'd also recommend a PRAM and SMC reset: [url=http://support.apple.com/kb/HT3964]Intel-based Macs: Resetting the System Management Controller (SMC)[/url] [url=http://support.apple.com/kb/HT1379]Resetting your Mac's PRAM and NVRAM[/url] Finally, the fans may run faster if the intake tracts are clogged with dust. iFixit.com has disassembly directions for most Mac models. Generally, you can take off the bottom panel and blow it out with some compressed air (be sure to hold the fans captive while you do this as it's generally a bad idea to overspin them). [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Unnecessary fan noise
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