Mysterious ticking noise comming from what appears to be fan

Ok, so I own a MacBook Pro 13" and I've had it for maybe a little under 6 months. Yesterday, I discovered a mysterious ticking noise comming from the upper-left bottom of the MacBook. I presume it is coming from the fan, as right now, my CPU temperature ifs 142F and the fan is running at 000rpm. Running Apple Diagnostics confirms my suspicions as it comes up with an error that ends in Exhaust, which I believe is the fan.
I have tried resetting the SMC with the SHIFT-Control-Option-Power combination with no success.
I have scheduled an appointment at the Genius Bar on monday but I was wondering if there are any known solutions at the mean time.
Thanks.
(PS: I have the latest version of Snow Leopard: 10.6.7)

What was the error message exactly ? If it's the fan motor then it would show MTR, if it's a temperature sensor error it would show SNS.
The fact that fan isn't running implies the motor has failed and you're right to get that fixed a.s.a.p.

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I have a MacBook Pro and I opened an email, clicked on the link and then realized it may have not been sent by the person it appeared to have come from, what can I do to ensure there are no problems?

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Delete the cookie and cache of any website you visited that you are uncertain about. That's in your browser preferences. What Mac operating system and browser are we talking about?
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Does the noise come from harddisk or fan?

Hi all,
My powerbook 17'' always has this noise come from left side of the powerbook. I am unable to determine the source of the noise coz I am not sure where is the exact location of the noise. (I read that the fan supposed to be in left side of keyboard and harddisk is in the left side of the palm rest; please correct me if I am wrong).
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Is the harddisk supposed to spin all the time (even no read/write activity)?
There is what has been called a sizzling sound that constantly emanates from this computer, and, depending on the combination of your sensitivity to it and the presence of ambient noise, is clearly audible in a silent room, but this is easy to differentiate from the fan, which is quite a bit louder. If you haven't done any processor intensive tasks, then it's possible that you have never heard this fan, which doesn't go on, I believe, until the CPU has reached a temperature of about 145F. On the other hand, the 'sizzling' sound has been a frequent topic of discussion in this forum. Over the course of the first two revisions of the PB 17, one thread on the subject grew to around 300 posts in length.
If you are dubious about the state of your HD, run the Disk Repair tool in Disk Utility while you are booted from your installation DVD to check the drive's SMART status. If you want to investigate this further, boot into the installation DVD again holding down the Option key and run the extended Apple Hardware Test. Having eliminated any applications or startup items as the cause of the problem, your last troubleshooting step might be to reinstall your OS. Before you do that, see if you can find another 1.67GHz machine to listen to so you can compare the sounds you hear from both. It may be that there is really nothing to worry about....
Good luck.
Tuttle
BTW, What became of this issue?: http://discuss.info.apple.com/webx?13@@.68b7a64a

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Hello,
I owned Nokia 2730 Classic for a few years...
One night, i was almost asleep when suddenly, a loud noise comming from my phone alert me (the phone was in stand by on my desk). The noise was comming from the speaker, i recon. In background a documentary was playing (consider the difference of the volume between the phone and the PC -> the noise comming from the phone was very loud).
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http://youtu.be/8eF56cOviyw
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This is from the late 2011 MBP 13"
https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Unibody+Late+2011+Battery+Repla cement/7649
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https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Unibody+Late+2011+Fan+Replaceme nt/7654
When you take the fan out, you'll closely examine the grill at the top of the fan in step 6. It's most likely filled with lint like in a dryer.
So with the fan out examine it carefully. Spin it and see if it makes the noise you're hearing. There's probably something stuck in there. Use compressed air to blow it out. Or if it's bad you might have to replace it.

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Hi,
If this post is in-appropriate for any reasons, please let me know, and I am sorry for that.
But I did google and follow the instructions on the wiki, and nothing helps.
A noise, sounds like electricity, just comes.
And another buzz sound comes together while moving the mouse.
My system is:
Mother board= ASUS P4P800 (ICH4-Inter ICH5, 82801EB/ER, AD1985)
Kernel=2.6.27.10-1
alsa-lib=1.0.18-1
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Thank all of you.
I tried Ubuntu Live CD, and the noise still comes out.
So how can I be sure if it is a "hardware" problem?
I mean... the noise comes out while "udevadm settle" (in /etc/rc.sysinit) had finished.
If it is a "hardware" problem, shouldn't it comes out even in.... BIOS (or GRUB) ?
Besides, udevadm settle is used to load kernel modules, so it is quite reasonable to say that
there must be some modules which cause this problem, right?
Also I tried to remove kernel modules used by none, but it doesn't help, neither.
Those modules still loaded are:
Module Size Used by
snd_intel8x0 30748 2
snd_ac97_codec 100516 1 snd_intel8x0
ac97_bus 3584 1 snd_ac97_codec
snd_pcm 69636 2 snd_intel8x0,snd_ac97_codec
snd_timer 21384 1 snd_pcm
snd 50724 8 snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer
soundcore 8160 1 snd
intel_agp 27068 1
snd_page_alloc 9224 2 snd_intel8x0,snd_pcm
usbcore 134384 1
agpgart 30804 1 intel_agp
evdev 11296 3
ext3 126344 2
jbd 46484 1 ext3
mbcache 8708 1 ext3
sd_mod 27160 4
ata_piix 18308 3
libata 153888 1 ata_piix
scsi_mod 96460 2 sd_mod,libata
dock 9616 1 libata
It seems that there is nothing I can do...
Last edited by bsdson.tw (2009-01-09 08:51:03)

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Morty89 wrote:
Hi, i have a new 2012 regular 15" mbp.
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Call Apple Care.
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13 screws. 10 for the bottom pan and 3 for the fan. Takes 3 screws longer than upgrading the RAM, with the advantage that the fan is not static-sensitive.
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Hey, this is more of a general awk issue.
I'm running Arch on an x200 Thinkpad tablet and trying to improve on the rotate script in the wiki.
Currently, the wiki's script has predefined values for the stylus/eraser devices that don't work for all systems (mine for example). I would like to make it so that these device names are discovered by the script at runtime so that the user doesn't have to edit the script to make it work.
In order to do this, I'm using
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and likewise for the eraser.
The problem is that when the script runs, it says "Cannot find device 'Serial Wacom Tablet stylus'." even though that's the exact thing I had in the script before messing with the variable assignment.
What makes these strings different? Is there some nuance of awk that I'm missing?

#!/bin/bash
#### rotate.sh - A script for tablet PCs to rotate the display.
## This software is licensed under the CC-GNU GPL.
## http://creativecommons.org/licenses/GPL/2.0/
## http://wiki.archlinux.org/index.php/Tablet_PC
## REQUIRES: linuxwacom (http://linuxwacom.sourceforge.net/)
#### Function(s)
function set_normal {
xsetwacom set "$stylus" Rotate 0
xsetwacom set "$eraser" Rotate 0
xrandr -o normal
function set_right {
xsetwacom set "$stylus" Rotate 1
xsetwacom set "$eraser" Rotate 1
xrandr -o right
function set_left {
xsetwacom set "$stylus" Rotate 2
xsetwacom set "$eraser" Rotate 2
xrandr -o left
function set_inverted {
xsetwacom set "$stylus" Rotate 3
xsetwacom set "$eraser" Rotate 3
xrandr -o inverted
#### Variable(s)
orientation="$(xrandr --query --verbose | grep connected | grep -v dis | awk '{print $5}')"
eraser="$(xsetwacom --list | grep ERASER | awk '{$NF="\b"; print $0}')"
stylus="$(xsetwacom --list | grep STYLUS | awk '{$NF="\b"; print $0}')"
#### Main
if [ "$orientation" = "normal" ]; then
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elif [ "$orientation" = "right" ]; then
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elif [ "$orientation" = "left" ]; then
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fi
#### EOF
Like I said, a slight modification of the original wiki script.
xsetwacom --list returns
Serial Wacom Tablet stylus STYLUS
Serial Wacom Tablet eraser ERASER
Edit:
I whipped up a short script to illustrate my problem
#! /bin/bash
therightthing="Serial Wacom Tablet stylus"
stylus="$(xsetwacom --list | grep STYLUS | awk '{$NF="\b"; print}')"
if [ "$therightthing" = "$stylus" ]; then
echo "Equal"
else
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echo "$stylus |"
echo "$therightthing |"
fi
The vertical line is my check for trailing whitespace. When run, it returns that they're not equal, but the strings look the exact same.
Output:
Not Equal
Serial Wacom Tablet stylus |
Serial Wacom Tablet stylus |
Last edited by Pursuit (2010-09-27 23:05:39)

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in@ 00:03:20 and then out@ 00:04:20...
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