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All replies
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Helpful answers
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Feb 7, 2016 10:19 AM in response to Biffobby Allan Jones,An overactive fan can indicate a problem with a temperature sensor. There is a safety function in that, should the system detect a failed temp sensor, it tells the fans to run at full RPM to prevent heat damage, but resulting in a noisy computer.
A sensor problem can be detected with either Apple Hardware Test or Apple Diagnostics depending on your exact MBP model. Information on using these tools is in this Apple article:
Using Apple Diagnostics - Apple Support
If either reports an error with SNS" near the beginning, that indicates a sensor issue. However, there are more than temp sensors so posting the full code here may help to narrow it down.
If the computer passes that test, we'll need to walk you through some other diagnostic tests.
It would be helpful to know your exact MacBook Pro version. Please do "About this Mac" from your Apple menu and, in the resulting window, tell us what the line I have indicated with a red arrow reads on your computer:
For security reasons, do not post your serial number in either test or a screenshot.
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Feb 7, 2016 10:31 AM in response to Allan Jonesby Biffob,Thank you Allan. It reads - MacBook Pro (13-inch, Early 2011). I'll try running the diagnostics test you suggest and see what shows up. I hadn't before as the Genius guy ran some tests in-store that all appeared ok. Clearly not though, so anything you can suggest will be excellent. I'll run the test as soon as the Time Machine backup has completed. Thanks again.
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Feb 7, 2016 10:35 AM in response to Biffobby OGELTHORPE,Take off the bottom plate of the MBP and see if there is dust an debris inside. If so, clean it out.
Ciao.
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Feb 8, 2016 1:25 AM in response to Allan Jonesby Biffob,Hi again Allan. So, I've run the Apple Hardware Test, I chose the extended test and the result was no trouble found. The test conducted by the Genius Bar person also produced that result. I also removed the back of the MBP to check for dust build ups as suggested by OGELTHORPE, There was a small amount of dust present that I removed, however the fan still runs very noisily. I'd be grateful for any other ideas you may have. Very much appreciated!
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Feb 8, 2016 1:26 AM in response to OGELTHORPEby Biffob,Thanks for the suggestion. Unfortunately, despite there being some dust build up, this didn't work. Appreciate the idea though.
