Random shutdown issues

Hi,
I apologize if this has been answered in other threads, but I'm going to ask anyways.
I've been having random shutdown problems (both kernal panics and "won't wake up from sleep" issues) since I got my MacBook in November 2006, but they've been happening more frequently recently and I'm worried I'll lose information (especially as I'm just starting an online university course).
What are my options? I still have the one year warranty going? Can I get it repaired/replaced? Who should I talk to or email?
Thanks so much for your help, it is much appreciated. If there is any other info you might need just let me know and I'll post it.
Carl
ps yes I have installed the firmware update that was supposed to correct this issue.

I've been having random shutdown problems (both kernal panics and "won't wake up from sleep" issues...
These are not related to RSD.
There are lots of things to try depending on what exactly is happening and what you're doing at the time these things occur - running Disc Utility from the Install DVD, creating a new user, running maint. tasks, SMC or Pram resets.
You're book has a standard 1 year warranty and you can get it repaired by bringing it in to your local Apple shop - if it's a fault of the Macbook and NOT anything user related (installed problem apps, widgets, drivers etc.) then you won't be charged for any service work.
Yes, posting specific information will always help in nailing down what a potential problem could be.

Similar Messages

Random shutdown issues, battery, and overheating.

Hi,
About two weeks ago, I've experienced random shutdowns on my MacBook Pro (Bought it on October).
I am not sure if all this problem was about battery issues. First I've charged it for the first time and only lasted 1 hour. then I recalibrated it and now it last 2 hours and a bit more.
Now, apart from having battery issue, I've experienced random shutdowns from my laptop. I had installed all the available updates for my laptop.
Reading all the posted topics about heat, shutdowns and batteries, maybe my problem is just overheating.
So I've installed the fan control, adjusted the speed to 3500 rpm and worked fine.
But one thing came to my mind:
Is it safe for the fans to actually force the speed all time? if so, their cycle life could be shorter?.
On either case, what if the MBP actually has a defective factory error and if I still be using it, it could completely "melt from the inside"?
Does the battery itself has something to do with the overheating itself?
Maybe I should call for a laptop replacement as well.
Any suggestions?

Your Mac will very likely last as long as you own it or otherwise choose to upgrade. The heat issues posted here are not entirely valid. With that said, you might want to verify that your battery isn’t on the recall list by viewing the link provided below.
Excerpt:
"The affected batteries have model number A1175 and a 12-digit serial number that ends with U7SA, U7SB or U7SC. To view the model and serial numbers located on the bottom of the battery, you must remove the battery from the computer. The battery serial number is located above the barcode. See photos below. Only batteries within the noted serial number ranges need to be exchanged."
https://support.apple.com/macbookpro15/batteryexchange/
Regards,
 MBP-15"/2.16/2GB RAM/7200/W8612... Mac OS X (10.4.8) G4 Tower (OS 9/10), Dell 620 WorkStation (XP Pro), Gateway P4 (XP Home)

Possible Fix for the Random Shutdown Issue

One of the readers at MacFixit was able too find a solution to his RSD Macbook. He discovered when he removed the top case (they keyboard) off his machine, the Macbook worked fine. After further investigation, he found out that the top case and the heat sync seem to touch each other while the machine is closed (generating more heat). To fix the RSD he put kapton tape on the top case (to separate the heat sync and the top case) and on the track pad cable. Not only did it fix the RSD problem, another plus it causes the computer to run cooler.
So it appears what Apple needs to do is, either put Kapton tape on the top case, or move some the thermal grease from the processor too the top case. Another easy fix might be just to send out new top cases (since only a significant minority are effected by this problem, their might just be a set of bad cases out their).
Before you decide to open up your machine and put on Kapton tape on your machine, keep this in mind, it will void your warranty.
http://www.macfixit.com/article.php?story=20060821101232169
Macbook Mac OS X (10.4.7)

Holding down the power button until it beeps is still the only way that I can get my machine to boot up fully and become operational. I was starting to think that I was crazy after reading above that all it did was to remind me that my finger was still on the power button. I've had my husband and my son watch this process just to convince myself I wasn't crazy.
I've been deleting software, going through log files, making other changes to make sure that they weren't interfering with the machine working. I shut the machine off this morning to go do something else. When I turned it on again I forgot to hold the power button until I heard the beep. After I logged in, I realized that I hadn't done that and that the machine had actually gone through the complete boot cycle and login. I thought "wow, maybe I fixed it. Maybe it was something software related." I waited for a few minutes to make sure that everything that it had to do in its start up was finished before I did anything thinking "well maybe its just that I try to do too many things too quickly, and it is operator error and my fault I've been having this problem". Then I went to open Safari and "blink" the machine went dead.
Then I put my finger on the power button until it beeped to start it up a second time. I've been working on it for six hours now. It's gone to sleep while I've been on the phone, I've woken it up with a short press of the power button and logged in a few times today.....not one single problem in 6 hours.
It's crazy. I don't know what holding the power button for that long does but it must be resetting or otherwise doing something that causes it to override whatever problem was causing it to just shut down by itself. I love everything else about this MacBook. I don't want to have someone start taking it apart and putting it back together again. If the fix is just remembering to "hold power until it beeps" I"ll live with it.

Random Shutdown/Thermal Runaway

Unfortunately, the AppleCare Plan on my iMac G5 (iSight) expired a month ago. Or, to be a little more clear on the irony, a month before I started getting a repeat of a random shutdown issue that I had the machine in for about a year ago. These typically happen when my son is playing WoW or we are watching YouTube vids, movie previews, etc. or just plain using a lot of processing power.
*Most recent detail on the forced sleep shows the following:*
1/23/09 8:27:06 PM kernel IOPMSlotsMacRISC4::determineSleepSupport has canSleep true
1/23/09 8:27:06 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/23/09 8:27:06 PM kernel SMUNeo2PlatformPlugin core dump:
1/23/09 8:27:06 PM kernel IOHWControls:
1/23/09 8:27:06 PM kernel [0] "ODD Fan" Type:"fan-rpm" Id:0 TGT:1475 CUR:1476
1/23/09 8:27:06 PM kernel [1] "HDD Fan" Type:"fan-rpm" Id:2 TGT:1975 CUR:1976
1/23/09 8:27:06 PM kernel [2] "sysclk slew" Type:"slew" Id:100 TGT:0 CUR:0
1/23/09 8:27:06 PM kernel [3] "CPU Fan" Type:"fan-rpm" Id:1 TGT:3600 CUR:3600
1/23/09 8:27:06 PM kernel IOHWSensors:
1/23/09 8:27:06 PM kernel [0] "CPU Power" Type:"power" Id:3 CUR:19.55327 W
1/23/09 8:27:06 PM kernel [1] "ODD Temp" Type:"temperature" Id:5 CUR:44.32768 C
1/23/09 8:27:06 PM kernel [2] "HD Temp" Type:"temperature" Id:4 CUR:52.32768 C
1/23/09 8:27:06 PM kernel [3] "GPU Ambient" Type:"temperature" Id:8 CUR:56.16384 C
1/23/09 8:27:06 PM kernel [4] "NB Temp" Type:"temperature" Id:9 CUR:84.8192 C
1/23/09 8:27:06 PM kernel [5] "GPU Temp" Type:"temperature" Id:10 CUR:79.0 C
1/23/09 8:27:06 PM kernel [6] "NB Ambient" Type:"temperature" Id:7 CUR:54.32768 C
1/23/09 8:27:06 PM kernel [7] "CPU Voltage" Type:"voltage" Id:2 CUR:11.61504 V
1/23/09 8:27:06 PM kernel [8] "CPU T-Diode" Type:"temp" Id:0 CUR:85.2628 C
1/23/09 8:27:06 PM kernel [9] "CPU Current" Type:"current" Id:1 CUR:1.60800 A
1/23/09 8:27:06 PM kernel [10] "Incoming Air Temp" Type:"temperature" Id:6 CUR:35.0 C
1/23/09 8:27:06 PM kernel IOHWCtrlLoops:
1/23/09 8:27:06 PM kernel [0] "Clock Slew" Id:0 MetaState:0 "Dynamic Power Step"
1/23/09 8:27:06 PM kernel [1] "M33 CPU Control" Id:1 MetaState:0 "Normal"
1/23/09 8:27:06 PM kernel [2] "M33 HD Control" Id:2 MetaState:0 "Normal"
1/23/09 8:27:06 PM kernel [3] "M33 ODD Control" Id:3 MetaState:0 "Normal"
1/23/09 8:27:06 PM kernel [4] "M33 GPU Control" Id:4 MetaState:0 "Normal"
1/23/09 8:27:06 PM kernel [5] "M33 KODIAK Control" Id:5 MetaState:0 "Normal"
1/23/09 8:27:06 PM kernel ---------------------------------
Have tried the standard resets of PRAM and SMU, permission repair, etc. which, though fun, have not done anything to solve the problem.
Any thoughts, suggestions as to what I can do or what can be done now that I am outside the AppleCare Plan would be very appreciated. Other than spend lots of money on a repair of course!
_Just to give you a little peak into the frequency, here is a short sample from console_:
1/21/09 7:54:38 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/21/09 7:56:51 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/21/09 7:59:36 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/21/09 8:54:00 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/22/09 11:13:58 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/22/09 11:17:50 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/22/09 11:24:11 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/22/09 11:41:16 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/23/09 4:40:52 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/23/09 4:46:17 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/23/09 4:48:58 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/23/09 6:00:00 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
1/23/09 8:25:20 PM kernel Thermal Manager: max temperature exceeded for 30 seconds, forcing system sleep
Message was edited by: James Seines

Your power supply is failing, take it in and have it replaced, your symptoms are classic and point to thermal overload caused by the power supply failing.
You might try calling Apple Customer Relations at 800-767-2775 and see if you can talk them into paying for the repair. Be polite but firm and ask to be escalated to the next level.

Random Shutdown - Shipment in Europe

Hi,
might you have had to ship your MacBook to Apple as well from Europe (Germany) because of the Random Shutdown issue.
In the past I shipped my systems always to somewhere within the country. This time the shipment has to go to:
Celestica
Priorslee
Shropshire
Telford
TF2 95A
Great Britain
I wonder if Apple has changed their service for all kinds of systems or is it this time just because of the RSD issue?

Bad thing is that I wrote the discription of the error plus the way how to reproduce the shutdown in German language.
I hope the guys can read it

Random Shutdown (theory | wild guess) - thermistor

Just sent my MacBook into service for the second time because of Random Shutdown. First time I got a new logic board. This next time, before I took it into the Genius Bar, I called up AppleCare to see if there was any known resolution on the Random Shutdown issue. Got directed to a Product Specialist who said that she would send a note to Engineering. I thought ... right. But apparently Engineering got back to her, she made some notes in my case report. Of course, no one at AppleCare would tell me what was in the notes. ???
So, this morning, the Genius tells me that the notes indicated that the thermistor cables may have been damaged when the logic board was replaced. Hadn't heard that before, so, thought I'd post.
Could Random Shutdown be caused by bad "thermistor cables"? Seems as likely as anything else; perhaps the manufacturing process tended to damage some as they were made. And during repair, they were also damaged. Who knows. Maybe Engineering took a wild guess. Maybe there's no such thing as "thermistor cables".
I'll post more when I get the box back; supposedly since this is a re-repair, it gets a higher priority. But they also couldn't repair it in store, no thermistor cables (or whatever). So it's off to Tennessee.
MacBook, White Mac OS X (10.4.7)

Please tell me you were repairing 8-track equipment
MORE than just a few years back...
Ya, I guess the 8-tracks were back in the 70s. Boy how time flies...eh? A good friend of mine used to go to K-Mart every week and buy new 8-track tapes. It was an addiction. He had a couple of suitcases in his trunk full of them.
Any random
shutdown issues in those?
I replaced a LOT of thermistors in television sets. When they went bad, the degaussing circuit stopped working and the CRT's color purity would get all screwed up. I could tell the thermistor was bad when I walked in the door and looked at the screen.
I had a PC that eventually had a problem reading disks (3.5", if you >remember those). Swapped it out, and when I did, realized their were a >bunch of coins in it. Gave the boys a little lesson that day to NOT put things >in slots on machines unless we said it was ok.
Oh yes. Coins were VERY popular.
parts replaced :-
top case 922-6869
bezel 603-9857
thermal assy 922-7379
lollipop 603-8320
robin.
Thanks Robin!
-Bmer
Mac Owners Support Group
Join Us @ MacOSG.com
ITMS: MacOSG Podcast
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Macbook problems, hard drive crash, random shutdown, freezes

I bought my macbook used a few months ago, and it worked flawlessly until about 3 weeks ago. The system started freezing and not booting (getting folder icon instead of apple at startup). I ran drive setup and tried to repair the drive, but this did not fix the problem. DiskWarrior also could not fix it. I pulled the drive and installed a new hard drive, as I wanted a larger capacity anyways. All my problems appeared fixed for about two weeks, then similar problems began occurring. I backed up all the files I needed to an external firewire drive and attempted to reformat the new internal drive. Drive Setup says it can not reformat the drive - can't mount it and if it does, the drive disappears while in the process of formatting. I pulled the new drive and am having it replaced under warranty. I am using the firewire drive to run my computer, and this seemed to work fine for a day or two until the computer just started shutting down with no warning. Everything goes black, including the little light on the front of the computer. I have to hold down the power button for 10 seconds before it lets me start the computer back up. I had read this may be a memory issue, so I ran memtest and it says the memory is fine (I need to do it in single user mode still, however). I also tried pulling both sticks of ram. They are both 1GB crucial memory. I put each stick in by itself and tried it in both slots and was able to reproduce the shutdown issue with any ram configuration of either stick.
After all this, I realized the firewire drive was only running 10.5, so I updated all the software through software update, and it is now running 10.5.2. It seems to be working better as I have not experienced a random shutdown yet, but I'm anticipating it may start back up soon. Today, however I experienced a different problem - the screen froze on me and the only way to get anything to happen was to force a shutdown with them power button. It's restarted and seems to be working fine again for now.
I've run some logs and here's some things I've found:
When the latest freeze happened, I got this repeated over 100 times:
Apr 29 11:04:31 jon-turners-macbook quicklookd[536]: CGContextClosePath: no current point.
I've also seen this:
Apr 29 11:18:19 jon-turners-macbook kernel[0]: Previous Shutdown Cause: 3
Apr 29 11:18:19 jon-turners-macbook kernel[0]: GFX0: family specific matching fails
Apr 25 19:19:50 localhost kernel[0]: hi mem tramps at 0xffe00000
Should there be anything else I can check? I would run Apple Hardware Utilities, but I don't have the original disks, just the Leopard installer. I have Disk Warrior, but it seems strange this would happen with multiple systems and drives. I'd like to get Techtool Pro, but haven't had the money/time to order it yet.

Thanks for the replies!
Yeah, I think it's the HDD. I was just worried that the RAM was bad and corrupted the HDD or something, but given the symptoms I think you guys are right. Ordered a 7200RPM 320GB HDD off Amazon Prime...will be here tomorrow
I'll post how it goes after I finish installing it. I'm backing up as I type.
I wonder if I can fix the ir port and the sleep indicator light when I install the hard-drive. The sleep indicator light never turns off. It stays on as long as my computer is on, only turns off when I shut it down.

K9N Platinum: CPU upgrade = Random shutdowns..

I just installed a new AMD Athlon 64 X2 3800+ EE in my MSI K9N Platinum motherboard (MS-7250 v1.0, the 070 model according to the box). I had updated the BIOS to version 1.7 before installing the CPU. Anyhow, I got the CPU installed and it seemed to be running fine. Until I started playing my games. Upon playing fifteen (!!!) minutes of Day of Defeat, the system completely turned off. COMPLETELY. No error messages. I check core temp's log to make sure the CPU wasnt overheating; it wasnt. The max temp was 38C on one of the cores. Just to make sure the CPU wasnt the problem, I ran two instances of prime95 for 5 hours and there were no calculation errors whatsoever. I also ran 3-4 loops of SuperPi, using the 32M test. No errors.
I have come to the conclusion that it must be the motherboard, and possibly it does not like the CPU. Or else it is having the same random shutdown problems as many other K9N Platinum/Ultra boards are experiencing. From what i have read, this issue only relates to boards that are 040, 050, or 060 models. I have a 070 model, and I AM GETTING THIS PROBLEM!!
Help!!!
Full specs:
MSI K9N Platinum MS7250 V1.0, BIOS 1.7, model 070
AMD Athlon 64 X2 3800+ EE (old CPU: AMD Athlon 64 3500+; had no issues with the 3500+) vcore: 1.225
1 GB OCZ Platinum DDR2-800, 5-5-5-15, 2.1v
eVGA GeForce 7800GT videocard with Zalman VF900, 490/1220
Hitachi Deskstar 7K80 SATA HDD
LITE-ON DVD-ROM drive
Floppy drive
3x 80mm fans, 1 cold cathode
Antec Truepower 430 watt PSU, dual +12v @ 17A a piece.
Any ideas?

well, i know that ACPI has to do with power saving features.
http://en.wikipedia.org/wiki/ACPI
and HPET also has something to do with CPUs
http://en.wikipedia.org/wiki/HPET
and MCP55 is the nortbridge.
so i suppose i can conclude that it protects from overvoltage or promotes more power-saving? i dunno i really dont care as long as my PC works now,

To Everyone with Random Shutdowns! (Solved! REALLY!)

Hey all,
I had posted about a week back about my Macbook (Core duo white, late 2006), it was having the same symptoms as some of the others with the known random shutdown syndrome (RSS). Like many others I had thought it was the end of my macbook and the logicboard needed replacing because that is what the 'genius' people do, but I was still wondering what would cause it. It would randomly shut off! (or so I thought) I'd be typing in Safari, watching a youtube video, and even playing games, it would just shut off and I could hear the hard drive spin down. I'd restart and it would do it again sometimes right away, sometimes hours later.
This got me to thinking (like others have said) that it must be an issue with over heating. To test my theory I backed up my HD, and tried to reinstall Snow Leopard after zeroing the HD (as a fresh install). During the install process the Macbook's fan started to get loud and then it happened, it died again! So, this proved to me that it is NOT a software/OS issue at all, which means the said efforts in other posts of changing screen saver and energy saver settings had nothing to do with the cause! Aha moment!
I thought to myself... something is making it shutdown, obviously, and has to do with too much heat as the fan was going crazy even while reinstalling the OS. After reading many posts on different support forums I came accross the possibility that it could be the heatsink and/or sensor that is attached to it. I also found out that this "RSS" only applies to the non-unibody, core duo, and core 2 duo macbooks... you know what that means?
These models are the only ones with the shared memory and GPU on the same heatsink! GAH! A possible solution presents itself? To make a long post even longer... I removed the keyboard, carefully unscrewed the heatsink and fan and what did I see? Cracked and dried out thermal paste on the CPU AND GPU, they are both under the same heatsink after all, this was bad, really bad.
Luckily I had some Arctic Silver thermal paste in a tube from years ago when I upgraded my PowerMac CPU. Using some rubbing alcohol and a soft cloth I removed the crud on the heatsink, processor, and GPU (I might add that there was way too much paste on there in the first place). I waited an extra few minutes to make sure the alcohol evaporated, and then I applied a small (dime sized) amount of thermal past directly onto the two chips, I aligned the heatsink carefully and gave it a very small gentle push down onto the chips, reattached the sensor wire to the mainboard, and screwed the heatsink back in.
After putting the keyboard back on and making sure all screws were in... I immediately turned on the laptop and reinstalled the OS. The OS install took approximately 10 mintues! (crazy!) The last time I did that it took over 30 mins to install! I was stunned!
After the OS installed I let the computer idle and shut down, I let it sit for about an hour to allow the paste to contract as it cooled. After starting up again I immediately downloaded Temperature Monitor and installed it (I did have it running when my mac had RSS by the way), here are the results to prove my theory:
My Macbook with RSS:
CPU1 and CPU2 Idle temp - 114 degrees (F)
Heatsink temp - 128 degrees (F)
Approximate over heating temp - 184 degrees (F) (causing the heatsink sensor to shutdown the laptop)
My Macbook with new high quality thermal paste:
Idle temp of CPU1, CPU2, and GPU - 77 degrees (F)
Heatsink temp - 84 degrees (F)
Running temp with adobe CS4, youtube, and typing this message - 103 degrees (F)
Pretty amazing if you ask me!
Before I applied the thermal paste my Macbook took at least a minute to start up with a fresh OS install, now it only takes about 15 seconds! I have not heard the fan spin up and go crazy since! And I can't even explain to you how much fast it is now!
This does prove that Random shutdown syndrome (RSS) is caused ONLY by your GPU over heating due to old thermal paste between the chips and heatsink! A design flaw by Apple? probably not because thermal paste will crack and dry over time.
This also proves that energy conversion to data in the chips can decrease because of over heating, causing the computer performance to dramatically drop!
So before you take your out-of-warranty macbook to Apple or a repair shop, see what your internal temp readings are and try to replicate the problem with over heating your CPU/GPU! This was a 10 minute fix! I am still amazed at how much faster everything is, and haven't had a random shutdown since! I hope this helps alot of people that think they are out of luck and have to pay to get it fixed!
- Cory -

I too have this problem as well and it has been getting worse lately, I don't know what to do anymore. Here is a little info about my macbookPro. I have the late 2008 unibody model, i bought it in late 2009 Refurbished from Apple. Recently my mac has been turning off out of nowhere. I may be doing something and all of a sudden it just shuts off, it usually happens faster when i start to open up more programs like Photoshop or Final Cut Pro. My mac is out of warranty now and i dont know how much apple is going to charge me to fix it. i mean they want 50 bucks just to talk to them on the phone (ridiculous if you ask me)!.
    I have a temperature sensor installed and here is my data
CPU A Proximity: 126F
CPU A Temperature Diode: 133F
Graphics Processor Chip 1: 122F
Graphics Processor Heatsink 1: 113F
Graphics Processor Heatsink 2: 126F
Graphics Processor Temperature Diode: 131F
Left Palm Rest: 91F
Main Heatsink 3: 122F
Main Logic Board: 118F
Northbridge Chip: 127F
Northbridge Position: 124F
Here is more data from the Power
Battery Information:
Model Information:
Manufacturer:          GSA-1281
Device Name:          ASMB016
Pack Lot Code:          0
PCB Lot Code:          0
Firmware Version:          0
Hardware Revision:          0
Cell Revision:          0
Charge Information:
Charge Remaining (mAh):          3739
Fully Charged:          No
Charging:          No
Full Charge Capacity (mAh):          4610
Health Information:
Cycle Count:          68
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          -1766
Voltage (mV):          11793
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          0
Disk Sleep Timer (Minutes):          0
Display Sleep Timer (Minutes):          90
Automatic Restart on Power Loss:          No
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Wake on LAN:          No
Display Sleep Uses Dim:          Yes
GPUSwitch:          2
PrioritizeNetworkReachabilityOverSleep:          0
RestartAfterKernelPanic:          157680000
Battery Power:
System Sleep Timer (Minutes):          60
Disk Sleep Timer (Minutes):          0
Display Sleep Timer (Minutes):          2
Wake on AC Change:          No
Wake on Clamshell Open:          Yes
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
GPUSwitch:          2
Reduce Brightness:          Yes
RestartAfterKernelPanic:          157680000
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          No
Charging:          No
PLEASE HELP ME, I CAN NO LONGER TRUST MY MAC FOR WORK. any replies will be appreciated. thanks

Random Shutdown Because of Heat Sensors?

I bought my white MacBook in mid-May (week 19 production) and it worked fine with the exception of a whine when I did not have the iSight Cam on, the occasional mooing after using the computer heavily then using the CPU lightly for a while, and the discoloration. If you ask me it wasn't that much of a set back because this computer was fast and reliable... or so I had thought!
All of a sudden about a week ago, after I had the discoloration fixed, thanks to AppleCare (which only took 5 days), my computer shut down randomly in the middle of light usage...
At first I had thought that my external hard drive was the problem and I was very upset that this had happened. I tried to reboot my computer, but all that would happen was the usual DVD drive start up sound and then it would turn off again. I tried about 5 times to restart it with no luck, so I walked away. About 20 minutes later I was able to start it back up...
After not using my external hard drive for a day, it happened again, in the middle of normal internet browsing and listening to music it randomly shutdown. I thought that maybe it was an OS 10.4.7 issue, because I had not had any problems with x.6, so I erased and restarted from scratch, and once again, another MacDeath. Once again, I thought it to be my fault in my installation of 2Gb of RAM. I re-installed the custom 2x256 RAM that came with the computer ( and will remain in my hands forever, because you can't even pay someone to take away a stick of 256Mb RAM these days) well after the old RAM was forcefully shoved back in, it died again! This is when I started to get mad...
I put up with the whinning, I put up with the heat, I put up with the discoloration (for a while), but now this? WHY!
Over the next week it happened almost daily and sometimes when I would turn on my computer after it being off for at least 5 hours, it would load my home screen and after about a minute I would hear the fan come on for a few seconds, and then it would die again. I noticed that most times that my MacBook would shutdown unexpectedly, the fan had just turned on for a few seconds or I was playing a game and the fan was already on...
So today I called AppleCare and I had to wait about 30 minutes before I talked to someone... (When I called last time about discoloration, the wait was about 5 minutes) So either there are more and more angry customers calling, or Apple is firing employees to increase their stock value...?
When I finally got through the man told me that it was most likely not the Logic Board, but instead FAULTY HEAT SENSORS and/or FAULTY HEAT SINK APPLICATION. I won't lie I have seen Core Duo Temp show readings as high as 91 C (about 196 degrees F). I knew that this things got hot, but not so hot as to start a fire if left on too long....
So I am getting a box from DHL tomorrow (woohoo) MacB. and I get to part ways again, but this time, from reading many threads, I assume our time apart will be much longer approaching around 2 WEEKS!!!
All I hope is that AppleCare will fix the heat sensors that are supposed to shutdown the computer when it gets overheated.... I have to go to school in about a month and I will not have time to deal with these kinds of issues! I really like the MacBook and all of it's features, but I did not sign up to get a MacDieOnMeBook!
APPLE USE SOME OF THE 24% SALE INCREASE THIS QUARTER TO HELP YOUR LOYAL CUSTOMERS WHO HAVE BEEN WITH YOU THROUGH THE GOOD AND THE BAD!
MB 2GHz White 2GB RAM - 250 GB External HD Mac OS X (10.4.6)

As of yet i'm not exactly sure about the heatsink problem, although a few in here have reported machines that work well after having this part replaced, while others who only had the MLB replaced reported a recurrence of the problem.
as for the volume indicator, i noticed that mine did that too, but it was in fact muted whether or not the tool bar indicated it. i dismissed this as a small quirk, similar to when my volume indicator didnt change as i pressed the volume buttons on my old laptop. but so long as there was an acknowledging "squirt" noise on the computer indicating change of volume, that shouldnt be a problem.
good luck withyour MB

Problems with random shutdown after replacing a swollen battery

Hello all,
Perhaps one of you can help with this issue.
I'm using a Macbook Pro 17" mid-2007 model. A few months ago, the power disconnected from the machine when the battery had already run down and the machine did a hard shutdown. When I booted it back up there were serious problems with the display. Eventually it stopped working altogether. I took it for service and it was determined to by the NVIDIA graphics processor problem, so Apple replaced my motherboard.
When I got the machine back from servicing, there was a rattle in the right fan that gradually got worse. After a while the touchpad button stopped depressing in the center. I also experienced several random shutdowns while operating on battery power. I learned about the swelling battery issue with macbooks and ordered a replacement. By the time the replacement battery arrived my original battery was quite swollen. I'm concerned that the swelling battery may have warped the case a bit, leading to the fan noise.
I have now replaced the battery, but I'm still experiencing random shutdowns after 20+ minutes of use on battery power. I have done the RSS tests that were recommended in other forums and there doesn't seem to be any random shutdown problems when I'm plugged in -- only under battery power. My understanding is that a swelling battery can sometimes cause the battery to disengage from the electrical contacts on the MB, causing a sudden shutdown. I'm wondering why the problem is persisting now with a new battery? After one random shutdown, I tried to power up again using the battery, while pushing the battery into place at various angles, but I couldn't find any angle that would give power to the machine. The fan noise is also still present.
Can anyone offer an explanation or advise on any methods to overcome these random shutdowns? I have checked the console and the machine isn't registering any error when it shuts down, although when it restarts it says "DirectoryService[35] Improper shutdown detected"

Yep, it is video (or: or audio for video) so unless you're sure you need it (because you work or will work with the DVC Pro HD video/audio codec), you can remove the plug from its' folder and put it in your documents folder (don't trash it, I have no idea if it is necessary for non-DVC Pro HD users to have it installed too).
The WWW is littered with posts from people encountering bugs and crashreports with DVCPROHDAudio.plugin as the main suspect. Most of those posts seem to be from video people rather than audio folks.
http://www.google.nl/search?q=DVCPROHDAudio.plugin&ie=utf-8&oe=utf-8&aq=t&rls=or g.mozilla:en-US:official&client=firefox-a
But, if you get crashes and you see this one mentioned in the report, disable it, restart, and see if the problem's gone.

Iphone 6 randomly shutdown in standby mode

My Iphone 6 16gb randomly shutdown in standby mode, i only can turn it on by hold POWER + HOME. here is the log :
{"name":"Reset count","bug_type":"115","os_version":"iPhone OS 8.1 (12B411)"}
Incident Identifier: F0B79DBE-0BE1-431A-813E-70E7E2C17942
CrashReporter Key: 7305c452a84bf7ce3738c4bedf794c8e76fc4c58
Date: 2014-11-24 09:17:58 +0700
Reset count: 1
Boot failure count: 2
Boot faults: wdog btn_rst
Boot stage: 32
Boot app: 2681261667
Is this a hardware issue or software issue? thanks

Hi hnguyen1982,
If you are having an issue with your iPhone shutting down unexpectedly, I would suggest that you troubleshoot using the steps in this article -
If your iOS device restarts, displays the Apple logo, or powers off while you're using it - Apple Support
Thanks for using Apple Support Communities.
Best,
Brett L

Not so random shutdowns...

Hi,
My Macbook is just over a year old now still under applecare, I had random shutdowns before and did the firmware update which fixed it. Yesterday, I had the +please hold down the power button...+ message and so did thinking little of it, after all it is not uncommon to have to do it once in a while. Since then though it has been intermittently restarting all on its own and occasionally throwing up the +please hold power...+ message. Interesting to note is the optical drive noise when it restarts itself. I know how it should sound, the kind of mechanical movement sound that happens when you restart normally (or launch parallels and windows grabs hold of your drive). However, occasionally on these restarts it pauses during this sound several times making the same noise but stuttering through it... Strange!
It seems that I can often make it restart or throw up the power button message by just lifting up the front of the computer, as you would if you were turning it around or something. This leads me to believe it's a hardware fault... Looking under the battery compartment the two outside screws that are on the battery connection side were loose and nearly falling out so I tightened those back up, still the problem persists.
After the last restart message I copied this error report, I have no idea what to look for, just wondering if anyone can see anything helpful?
panic(cpu 1 caller 0x001A4A55): Unresolved kernel trap (CPU 1, Type 13=general protection), registers:
CR0: 0x8001003b, CR2: 0x00270000, CR3: 0x00e08000, CR4: 0x000006e0
EAX: 0x00000000, EBX: 0x00025fde, ECX: 0x02fa4d90, EDX: 0x24188000
CR2: 0x02f67af8, EBP: 0x13f7bfc8, ESI: 0xfc52147b, EDI: 0x0000009c
EFL: 0x00010046, EIP: 0x00101a00, CS: 0x00000004, DS: 0xb018000c
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x2f67968 : 0x128d08 (0x3cc0a4 0x2f6798c 0x131de5 0x0)
0x2f679a8 : 0x1a4a55 (0x3d24b8 0x1 0xd 0x3d1cc8)
0x2f67ab8 : 0x19aeb4 (0x2f67ac4 0xe 0xffe10048 0xc)
0x13f7bfc8 : 0x19b28e (0x2f67b0c 0x1 0x19ad3b 0x2f97d90) No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xbffffb58
Kernel version:
Darwin Kernel Version 8.10.1: Wed May 23 16:33:00 PDT 2007; root:xnu-792.22.5~1/RELEASE_I386
Model: MacBook1,1, BootROM MB11.0061.B03, 2 processors, Intel Core Duo, 1.83 GHz, 1 GB
Graphics: Intel GMA 950, GMA 950, Built-In, spdisplaysintegratedvram
Memory Module: BANK 0/DIMM0, 512 MB, DDR2 SDRAM, 667 MHz
Memory Module: BANK 1/DIMM1, 512 MB, DDR2 SDRAM, 667 MHz
AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x86), 1.1.9.3
Bluetooth: Version 1.9.0f8, 2 service, 1 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Network Service: Parallels Host-Guest, Ethernet, en2
Network Service: Parallels NAT, Ethernet, en3
Serial ATA Device: WDC WD1200BEVS-60LAT0, 111.79 GB
Parallel ATA Device: MATSHITACD-RW CW-8221
USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500 mA
USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA
USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA
I have tried a PMU reset, PRAM reset and whatever it is that happens when you hold the power button when you turn it on to make it beeeeeeep... The issue happens with or without the power cable attached.
Unless anyone can suggest anything here I'll be taking it to the repair centre...
Thanks for reading!

Ok, this is not an answer but it may help you a little: have you checked your logs? It may be an indication of what has happened there. If you don't know the drill: go to console under applications/utilities, select logs, and go there to /library/logs/panic.log. Some information may appear there, for instance if there is some consistent cause like one of your processors, some specific fault.
Not much, I know, but at least you may glean something out of it.

Random shutdown problem on G5 dual 2.3 GHz w/OS 10.4.7

Hello,
I’m using a dual 2.3 GHz G5, and it’s been working flawlessly since I bought it about a year ago. Until yesterday, I was running OS 10.4.5. Yesterday I upgraded to 10.4.7, and as soon as I booted up after the install, I started having a maddening problem with my computer randomly shutting down. (Not sleeping, but a complete power down.)
At first, the shutdown would happen immediately after powering up; my computer wouldn’t even make it to the blue progress bar. I zapped the PRAM and tried something I found online about unplugging the computer for 15 seconds, then plugging it back in. It now boots up, and I can log in, but the computer still shuts down randomly.
There seems to be no pattern to the shutdowns. I tried taxing the processor by opening and resampling huge Photoshop files while lots of other apps were open, and things were fine. Then it would conk out while I was composing an email.
I’ve heard of this random shutdown problem affecting Macbooks, but I have yet to find anything about G5 towers and OS 10.4.7. Does anyone have any info/advice?
Many thanks.
G5 dual 2.3 GHz Mac OS X (10.4.7) 2.5 GB RAM, 250 GB HD
G5 dual 2.3 GHz Mac OS X (10.4.7) 2.5 GB RAM, 250 GB HD

Thanks for the advice. I did check the system.log in Console and found the following altert:
PMU FORCED SHUTDOWN, CAUSE = -122
Now, since my computer is just over a year old, and since this problem happened immediately after applying the 10.4.7 OS update, I found it hard to believe that my hardware could be responsible. After 2 days of troubleshooting, I was stumped; after a 2-hour service call, so was Apple tech support. I ended up doing an archive and install back down to 10.4.5, and all is well.
I tested this issue on other machines running 10.4.7 and had no problems. It seems that the following specific combination of elements triggered the problem:
• PowerMac G5 dual 2.3 GHz (dual 1.8 machines did not exhibit the same problem)
• OS 10.4.7
• Logging in with Open Directory/Active Directory mobile profiles
• iTunes 7
Bottom line: if you’re using a dual 2.3 GHz PowerMac with mobile OD/AD profiles, do not update to 10.4.7, and steer clear of iTunes 7, at least until there is a patch update available.
(And Apple wants to be taken seriously in the enterprise market?)
G5 dual 2.3 GHz Mac OS X (10.4.7) 2.5 GB RAM, 250 GB HD

My iPhone 5 randomly shutdown and rebooting doesn't seem to work for me, what should I do?

It also happens when I'm charging my phone, and also the battery percentage doesn't show that correct battery level not unless I turn off and on.. I tried rebooting the phone but it doesn't seem to work for me, random shutdown still happens..

Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIsand corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.

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