A1212 Macbook Pro Cooling Fan Speed / SMC / Service Battery
Background:
I've owned my A1212 Macbook Pro Core 2 Duo since launch (Thanksgiving 2006 I believe). For some time now the temperature has been quite warm - more recently my right cooling fan has intermittently sounded like a jet engine and failed to speed beyond 1,500-2,000 rpm intermittently.
1. I ordered the correct cooling fan for A1212 right and replaced.
2. When I rebooted Macbook Pro here is what I see for temps in hardware monitor
AMBIENT TEMP 31C/88F
CPU A 44C 111F
CPU CORE 1:36C/97F
CPU CORE 2:39C/100F
"SMART DISK" — [DOES THIS MEAN THERE IS A SENSOR THAT IS NOT REGISTERING]
The hottest temp recorded is 109F/ CPU A temperature diode
The new cooling fan is majorly cooling the mac much better than prior fan.
3. I can't find ANY way to stop the mac from running both cooling fans at 6,000rpm
a) reset SMC (tried holding down power button 20 seconds after disconnecting battery
b) reboot
c) remove smcfancontrol
d) use smcfancontrol
e) monitor with temp monitor, hardware monitor, istat pro
f) no runaway processes - not even hot
4) I notice ( this was also showing up before install of new fan) in my battery icon it indicates "Service Battery" - while I do have a 4 yr old computer there was a recall on batteries so this battery is maybe 3 yrs old and I usually use computer plugged in.
I do not have my snow leopard boot dvd readily available to run hardware test on sensors, however techtool pro does not report any issues. I have not found any terminal commands to force the fan speed down nor any indication I have any apps that are accelerating it.
It appears that my fan speeds are accelerating shortly after power up - before OS X is even loaded completely - and never slow to normal speed except when mac is asleep.
IS IT POSSIBLE TO CONNECT THE FAN INVERTED (THE TWO PINS) MESSING UP ABILITY TO CONTROL FAN SPEED?
IS IT POSSIBLE THAT I INADVERTENTLY BROKE SOME SENSOR "SMART"?
I am thinking more and more that this is hardware related like a sensor. Any assistance would be greatly appreciated, while I don't have a Jet engine I have a very noisy mac
Hi N,
SMART reports on a number of checks on the HD. I don't believe that's any part of the current issue.
I agree with you that my first inclination is toward a sensor issue; by default, if the sensor's are not reporting properly, the fans run full speed/6000RMP.
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Choose the method for:
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Active Memory: 721.5 MB
Free Memory: 2.44 GB
Wired Memory: 561.3 MB
Used Memory: 1.43 GB
Inactive Memory: 185.8 MB
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0 kernel_task root 5.9 200.7 MB 2.39 GB
1 launchd root 0.0 1.3 MB 2.36 GB
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11 DirectoryService root 0.0 5.5 MB 2.36 GB
12 notifyd root 0.0 640 KB 2.34 GB
13 syslogd root 0.0 768 KB 2.36 GB
14 configd root 0.0 3.5 MB 2.38 GB
15 blued root 0.0 4.5 MB 2.36 GB
16 diskarbitrationd root 0.0 1.6 MB 2.35 GB
17 distnoted daemon 0.0 1.4 MB 2.35 GB
18 mDNSResponder _mdnsrespo 0.0 2.4 MB 2.36 GB
23 securityd root 0.0 2.7 MB 2.36 GB
26 ntpd root 0.0 1.1 MB 2.32 GB
27 krb5kdc root 0.0 2.0 MB 2.35 GB
31 usbmuxd _usbmuxd 0.0 2.1 MB 2.36 GB
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78 TiVoDesktop root 0.1 57.6 MB 908.9 MB
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97 coreaudiod _coreaudio 0.0 2.7 MB 2.36 GB
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118 UserEventAgent Lease 0.0 7.3 MB 2.38 GB
121 ARDAgent Lease 0.0 3.0 MB 2.61 GB
127 AirPort Base Station Agen Lease 0.0 5.8 MB 2.64 GB
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152 Safari Web Content Lease 0.3 187.5 MB 3.82 GB
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190 activitymonitord root 0.6 1.3 MB 2.33 GB
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194 cvmsComp_i386 Lease 0.0 2.8 MB 599.1 MB
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203 SFLIconTool Lease 0.0 1.1 MB 2.33 GBHello, LeaseBL.
Thank you for visiting Apple Support Communities.
Try resetting the System Management Control to see if the fan noise ceases. Also, make sure there are no obstructions to the fan as well as the portable is on a flat surface when in use.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Cheers,
Jason H. -
HT3986 when i use windows 7 with macbook pro ,the fan work hardly,how do i fix it?
when i use windows 7 with macbook pro ,the fan work hardly,how do i fix it?
Use InputRemapper
This is one or only utility I know, there are I am sure one or two others.
And the weakest link in running Windows on Mac: lack of thermal/SMC fan control to manage air flow and heat!
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