Subscribe to the OSXDaily newsletter to get more of our great Apple tips, tricks, and important news delivered to your inbox! Enter your email address below:. Thanks for this post! Thanks so much for this info! My fan sounded like it was dying a slow and painful death. I even opened up my laptop and blew out the dust. I tried this and started her up and was delighted to hear it sound like its old self! I have a Macbook Pro with Snow Leopard that has been exhibiting the fan problem on and off for a while now.
I have reset the SMC once before which seemed to work and have just done again with instant success. Just hoping it stays alright for a while this time.
On a slight tangent, after I upgraded to Snow Leopard the laptop would continue to run even though the lid was closed. This caused me much distress on quite a few occasions as it had been in a nice snug laptop bag and got very very hot several times, I am just hoping that it has not sustained too much damage.
I try to shut it down now when travelling. I have just upgraded to Only solution is to shut it down not restart and wait 5 sec. Seems to be a problem whenever I close the lid and open it again — Must be a software issue….
Not to be a pain but I have never had to do anything like that on a ThinkPad or a Lattitude. Sure they get warm and noisy, but deg F?!? This keeps it at around 65 deg C. I expect the fan to die within a year.
Possible Cause 2: Running Heavy Apps
Yes resetting the SMC is a fairly common troubleshooting technique with power related issues. After clean installation of Lion my MacBook kept reacting sluggish, it rendered a huge usage of memory and slow release of memory. After reseting both my MacBook improved in usage because of speed and memory usage.
Heat keeps below F, even when using apps which use both CPU and video at most.
Slow RPMs for a Fan on a MacBook
That would have been nice to know before my Macbook Pro did cooked itself a few weeks ago as a result — thanks apple for nothing! See if this works. Yup according to istat sometimes higher! So did a reset, re-did thermal paste Apple used too much and seems okay now. Converted some video got to F. Way better! Also on older Macbooks to reset SMC you just unplug, take out the battery and hold the power button for 5 seconds. I discovered this accidentally a few weeks ago on an iMac when I was moving it from one room to another.
Whidbey Island & Seattle Mac Consulting
Apparently if you just unplug from the wall for like 20 seconds then reconnect and wait about 10 more to boot up it resets the same power controller. Imagine my surprise when moving the iMac from one room to another seemingly fixed the fan blaring, LOL. I think Apple could alleviate a lot of headaches and support calls if the power settings were trashed automatically on the first reboot of a Lion install, since this obviously is the culprit here.
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5 Warning Signs Your Mac Has a Problem (And What to Do About Them)
May 18, at pm. March 23, at pm. Ruth says:. December 15, at am. The temp is not even high according to smcfancontrol. I will have no app open and nothing opening on startup. The fan runs with a grindy noise all the time. Should I probably replace it? Try rebooting your device and turn it back on.
If nothing works, make sure you bring your laptop to a local Apple Store to get support. Since there is a grinding noise, then there are two possibilities. There something obstructing the fan blades or 2. The ball bearing for the fan axle is failing due to dirt getting into the casing or the lubrication drying or seeping out. For 1. Try blowing out any dust or particles using compressed air from a can.
For 2. This is simply not true, dear Mac Experts. The and newer Mac Book Pros turn the fans off when not under load. The and newer MacBook Pros are semi-passive cooled. I had same problem before with my mac, it was running at high speed eve. But when i opened it to replace the feet pad of the cover, i noticed the battery is already bulging.
Replaced the battery and also solved the issue of always running at high speed.
Why is MacBook Pro Fan so Loud?
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