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Apple Computing Products:
macOS - Operating System
Unusual ticking noise from fan
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<blockquote data-quote="thejoetisor" data-source="post: 1367100" data-attributes="member: 232472"><p>I purchased a new iMac for Christmas.</p><p></p><p>I have used it almost daily since then. </p><p></p><p>All of a sudden I have been receiving a sometimes quiet, but sometimes loud ticking noise coming from the behind/underside of the computer. Nonetheless the noise is prominent. </p><p></p><p>I have read a few articles on the web, some claiming it is a noise that suggests HDD failure, other suggesting that it could be a loose wire being slightly hit by the CPU fan as it rotates. </p><p></p><p>I downloaded smcFanControl and played around with the speed of the fans and it made no difference. I then called Apple Support and they took me through a few steps to reset the power supply, or something. It involved unplugged, starting up again whilst pressing cmd, alt, p, and r and a few other steps.</p><p></p><p>I am just wondering if anyone has encountered this position before and/or if anyone has a solution.</p><p></p><p>I am running OS X Lion version 10.7.3</p><p></p><p>Many thanks. </p><p></p><p>(PS: I will be able to upload a video of the noise, if need be.)</p></blockquote><p></p>
[QUOTE="thejoetisor, post: 1367100, member: 232472"] I purchased a new iMac for Christmas. I have used it almost daily since then. All of a sudden I have been receiving a sometimes quiet, but sometimes loud ticking noise coming from the behind/underside of the computer. Nonetheless the noise is prominent. I have read a few articles on the web, some claiming it is a noise that suggests HDD failure, other suggesting that it could be a loose wire being slightly hit by the CPU fan as it rotates. I downloaded smcFanControl and played around with the speed of the fans and it made no difference. I then called Apple Support and they took me through a few steps to reset the power supply, or something. It involved unplugged, starting up again whilst pressing cmd, alt, p, and r and a few other steps. I am just wondering if anyone has encountered this position before and/or if anyone has a solution. I am running OS X Lion version 10.7.3 Many thanks. (PS: I will be able to upload a video of the noise, if need be.) [/QUOTE]
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Apple Computing Products:
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Unusual ticking noise from fan
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