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+--- Thread: fans on 2ghz macbook (/showthread.php?tid=133385)
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fans on 2ghz macbook - bazookaman - 03-12-2012
I guess this is an 06? Not sure. It's a 2,1. Running SL.
Anyway, it seems that after just a few minutes of use, the fans kick on high speed. I don't recall them fans ever running this much. I've installed 4gb of RAM in the past as well as upgraded the HD to a 500gb version. Even after the HD upgrade I don't remember the fans running so much.
Like right now, as I type this, I have Firefox open. And that's all. And the fans are running full blast. If I close the lid, the shut off after a few seconds. But Like I said, i don't remember them ever coming on all the time. Is there anything that would cause this? The only thing out of the ordinary is there is about 45gb of space left on a 500gb HD. Not sure if that would make a difference though.
Re: fans on 2ghz macbook - rich in distress - 03-12-2012
I have heard of ram making a difference in fan behaviour, but not that radical. never of HD.
You should run the hardware diagnostics disc to discard sensor temp malfunction.
Re: fans on 2ghz macbook - DRR - 03-12-2012
The heat sink compound that transfers heat from the CPU/GPU to the heatpipes/sink is probably getting old and less efficient.
Not enough to cause massive KP from overheating, (which will eventually happen) but enough to make the fans run more.
Happens a lot in older portables. If you are so inclined, crack it open, clean off the chips, and reapply thermal past/glue, depending on what it came with. I'd bet money that would solve it.
Re: fans on 2ghz macbook - bazookaman - 03-12-2012
DRR wrote: If you are so inclined, crack it open, clean off the chips, and reapply thermal past/glue, depending on what it came with.
That sounds like it would be very involved.
Re: fans on 2ghz macbook - Lew Zealand - 03-12-2012
Open Activity Monitor and set it to view All Processes. Is anything taking up >50% of your processor?
Re: fans on 2ghz macbook - p8712 - 03-12-2012
I posted a few weeks back when I had similar problems. Turned out to be 5 years of accumulated dust blocking the heatsink. I removed the fan, vacuumed out the dust, reassembled, and internal temperatures dropped like a rock. Kid of an involved procedure, but easier than reattaching the heatsink and just as effective. If it's never been opened and cleaned that could be the cause.
Re: fans on 2ghz macbook - btfc - 03-12-2012
smcFanControl will give you more info on temps and fan speeds, and lets you tweak fan behavior.
http://www.eidac.de/
"Open Activity Monitor and set it to view All Processes."
Yes! Also certain websites cause this behavior in Safari. Sometimes a Safe Boot helps for a while.
Re: fans on 2ghz macbook - jdc - 03-12-2012
If theres 4 gigs of ram in it, it would be a late 2006 with a Core 2 Duo, which can read 3.3 gigs.
What are you looking at in FF. Older MBs usually hate any video.
Re: fans on 2ghz macbook - decay - 03-13-2012
http://support.apple.com/kb/HT3964
Note: It is possible that the SMC could encounter an issue that may cause unusual system behavior typically related to the symptoms described below. In some cases, resetting the SMC may be the only correct method to resolve the issue, however, an SMC reset should only be attempted after all other standard troubleshooting has been performed.
Before Resetting the SMC
Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.
Press Command + Option + Escape to force quit any application that is not responding.
Put your Mac to sleep by choosing the Apple (•) menu from the upper-left menu bar and then choosing Sleep. Wake the computer after it has gone to sleep.
Restart your Mac by by choosing the Apple (•) menu from the upper-left menu bar and then choosing Restart.
Shut down your Mac by by choosing the Apple (•) menu from the upper-left menu bar and then choosing Shut Down.
If your Mac appears to be running normally but isn't responding, force the computer to shut down by pressing and holding the power button for 10 seconds. Note: You will lose any unsaved work in any open applications.
For Mac portables experiencing issues related to the MagSafe power adapter and/or battery, try:
Unplug the MagSafe power adapter from the Mac and the wall power socket for several seconds.
Shutdown the Mac. Physically remove and re-insert the battery (if it's removable) and startup the Mac.
If the issue is still not resolved after following the troubleshooting items above, an SMC reset may be necessary.
After performing normal troubleshooting, these symptoms may indicate that an SMC reset may be necessary:
Fans
The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated.
Lights
The keyboard backlight appears to behave incorrectly (on Mac computers that have this feature).
The Status Indicator Light (SIL) appears to behave incorrectly (on Mac computers that have an SIL).
Battery indicator lights, if present, appear to behave incorrectly (on portables that use non-removable batteries).
The display backlight doesn't respond correctly to ambient light changes on Mac computers that have this feature.
Power
The computer doesn't respond to the power button when pressed.
A portable Mac doesn't appear to respond properly when you close or open the lid.
The computer sleeps or shuts down unexpectedly.
The battery does not appear to be charging properly.
The MagSafe power adaptor LED doesn't appear to indicate the correct activity.
System Performance
The computer is running unusually slowly although it is not experiencing abnormally high CPU utilization.
Video
A computer that supports target display mode does not switch into or out of target display mode as expected.
A computer that supports target display mode switches into or out of target display mode at unexpected times.
Re: fans on 2ghz macbook - bazookaman - 03-13-2012
jdc wrote:
If theres 4 gigs of ram in it, it would be a late 2006 with a Core 2 Duo, which can read 3.3 gigs.
What are you looking at in FF. Older MBs usually hate any video.
You know, I thought that too. Which is kind of weird since this machine recognizes all 4gb.