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iMac fan constantly runs at full blast

I recently got a 21.5" Mid 2010 iMac from eBay, and in the listing it stated that one of the fans constantly runs at full blast. When I use the iMac, the fan starts at 100% as soon as the chime plays and it stays at 100%. I tried resetting SMC and any other generic fixes that I could find on google. Is there anything else I should try or should I just live with it?

iMac 21.5″, macOS 10.13

Posted on Jun 30, 2023 2:24 AM

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Question marked as Top-ranking reply

Posted on Jun 30, 2023 5:44 AM

Run Apple Hardware Test (now known as Apple Diagnostics, but the key chord is the same): Use Apple Diagnostics to test your Mac - Apple Support

1 reply

iMac fan constantly runs at full blast

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