24" iMac summer 2008. CPU fan runs at highest speed, some times goes to "sleep" mode. t' is about 35'- 42'C. Run hardware test: 4sns/1/40000000:tlop-130.000, next time 4sns/1/40000000:tlop-128.000 errors. Reinstalled all softwere. Nothing changed.
24" iMac summer 2008. CPU fan runs at highest speed, some times goes to "sleep" mode. CPU t' is about 35'- 42'C. Run hardware test: 4sns/1/40000000:tlop-130.000, next time 4sns/1/40000000:tlop-128.000 errors. Tried SMC, NVRAM, PRAM. Reinstalled all softwere. Nothing changed.
I suspect you have hardware problem with a fan sensor. Doing a software install will not help the machine needs to be taken in for service. If you run Apple Hardware Test in Extended Mode it should reveal the error code. If it does not then run AHT an additional 2-3 times to be sure in Extended Mode. Each pass will take about 30-60 minutes.
Similar Messages
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Early 2008 iMac (8,1) randomly goes into sleep mode
Hey,
My early 2008 iMac (8,1) on 10.8.2 goes into sleep mode by itself. I've played around in Energy Saver, tried resetting SMC, NVRAM, replaced HDD, reformatted HDD, installed smcFanControl, reinstalled Snow Leopard, Lion, Mountain Lion. None of that worked. Took it to the Genius bar, performed some diagnostics tests and they said everything worked properly. Does anybody have the same problem? I can still use the computer for general computer use (light web surfing and e-mailing), but it seems to go into sleep mode when I have a lot of applications open and especially when watching videos. I've tried researching this problem, but I've haven't found a definitive answer. Right now, the Genius that I've been talking to thinks it may be the RAM. I'm waiting on new shipments of test RAM to arrive at the Apple Store for him to properly diagnose.
Thanks,
Jason
iMac (8,1)
2.8 GHz Intel Core 2 Duo
2x2 GB 800 MHz DDR2 SDRAM
ATI Radeon HD 2600 Pro 256 MB
1TB 7200 RPM SATA ST1000DM003-1CH162
If you want to read the whole time line, I've included it here. I apologize for it being so long.
At first I was running Lion (10.7.5) and the computer would enter sleep mode whenever I was doing anything with video. For example, watching YouTube videos and chatting on FaceTime. And funny enough, I distinctly remember watching a bunch of movies with VLC and the computer did not go to sleep (Although, this is not true anymore). I could wake the computer up and use it, however within a few minutes the computer would re-enter sleep mode. The computer seemed fine and I could access all of my files. Tried resetting SMC and it did not resolve the issue.
I made a Genius appointment to see if they were familiar with the issue. The iMac passed the in-store diagnostics test; it said all the components were functioning properly. He told me to bring it home to do a fresh re-install of my OS and then run my computer to see if the problem persisted. I took it home and reformatted my HDD with a 35-pass erase, re-installed Snow Leopard (10.6.8) and declined to transfer any backups from Time Machine. I was using a fresh system and sure enough, the problem persited. Tried doing the same thing again but with Lion (10.7.5) and still no luck. So I made another appointment and it passed the in-store diagnostics test again. I let them keep the computer for a 24-hour diagnostics test. They told me they would diagnose my computer with the OS on my HDD as well as a copy of OS that the Apple store deemed 'good' on an external HDD. The Genius called me and told me that my HDD failed their 24-hour diagnostics test and recommended I replace it. I initially had a 750 GB HDD, and the Apple Store could only offer me a 500 GB HDD ($200). I opted to take my computer to Carbon Computing, an authorized dealer in Toronto, to have a 1 TB Seagate HDD ($170) installed with no OS on it. I brought it home, performed another 35-pass erase and installed Snow Leopard. Problem still persisted. Repeated with Lion, still unsuccessful. Looking back, I was so excited that I just had to replace the HDD to fix the problem, I forgot to ask the guy if he could recreate the issue.
I began to suspect that it was a heating issue. So I installed Temperature Monitor and smcFanControl, and cleaned the fans as much as I could without taking the computer apart. Without smcFC on I tried to recreate the problem and I noticed that the Power Supply Position 1 reached 95 degrees Celsius, and Graphics Processor Temperature Diode reached 97 degrees Celsius before entering sleep mode. I don't know much about temperature sensors and what they monitor specifically, and so I couldn't draw any conclusions from that data. I turned on smcFC and cranked the optical drive speed to 2000 RPM, HDD to 3000, and CPU to 3000. The computer still went to sleep but the temperatures were below 90 degrees Celsius before entering sleep mode. I've tried researching here and on the internet about normal operating temperature ranges of iMacs and generally found that most do reached that temperature but they do not go to sleep mode.
Then I thought it may be a problem with Lion so I upgraded to Mountain Lion. The issue still persisted. Tried resetting SMC and NVRAM, did not resolve issue.
I called the same Apple Store explaining to them that their recommendation of replacing the HDD did not resolve the issue. They told me to bring it in and have them check it out again. I went through the same process I did before; the iMac passed all of their diagnostic tests. The Genius told me this time he will test out the RAM. He called me and told me that he could replicate the problem and so he proceeded to put in a stick of 'good' Apple RAM, but the computer would not work. He said the 'good' Apple RAM was damaged, either before or in the process of putting it in. He plugged in my old stick of RAM and the computer worked. He tried to recreate the problem and claimed that the computer ran for over 24 hours with an existing movie on my HDD playing and it did not go to sleep mode. However, once I brought it home I played the same movie right away and it turned off 17 minutes into the movie. Tried resetting SMC and NVRAM again, ran the movie again, still went to sleep.
And that's the story for now...Now to find out WHY it does it at home only. How hot is it at home? Have you checked the AC current/voltage at home?
Well they were able to replicate the issue at the Apple Store the second time I left my computer there. Anyway, we don't have any heating on at my house at the moment. It's usually from around 20-23 degrees Celsius (72-75 F). Temperature Monitor says ambient temperature is 30 degree C though...
I'm not really sure how to check the AC current/voltage at home, but my computer worked before I moved it. So I'm not sure if that is the issue.
I normally only have speakers set up to my computer and a wired keyboard. The speakers are powered separately. I would assume that at the Apple Store only the power cord and wired keyboard are connected.
What is the Power Supply Position? And what does it do?
Thanks for your help! -
I have tried several times to install iTunes update 11.1.4 on my PC. I get a message saying that install was not successful and an error message of MSVCR80.dll not present, Error 7, (Windows error 126). I am told to reinstall iTunes, but nothing changes. What next? I've not had this problem with other updates requested by Apple.
I have also had the same problem with my Win 7 32 bit computer. I had great help from Apple techs in Montreal and Orlando for 2.5 hours. They helped me remove every trace of Apple products and clean the registry in two different ways. Each install gave the same problem! If Apple techs can't fix it (on some of our machines) then we are really in trouble. They promised to raise it with the "engineers" and get back to me with a solution. I am waiting and hoping. Otherwise maybe version 11.1.5 will have a fix ??
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My iMac is set up wireless. Everytime it's allowed to go in sleep mode, it loses wireless connectivity. Then, when I wake it up, I must go to System preferences, Network, and request it to reconnect to my home wireless network. It always does this successfully, but it's quite annoying that it seems unable to achieve this on it's own. My iPad 2 and kindle can do this, why not my iMac?
This appears to be a known issue, there are a couple of things both of you should do, first file a bug report in www.apple.com/feedback.
The next thing is more a work around than a fix. Instead of putting your computer to sleep just put the display to sleep. You will find this in System Preferences - Energy Saver. Set the computer sleep to Never and then set the display sleep to what ever time you prefer. -
we are running 3 batches parallel(a.ksh,b.ksh,c.ksh parallel ) .if a.ksh will complete then d.ksh will start('d' start when 'a' will terminate successfully) and we have to handle error for all jobs ( if some job got aborted during runtime) ?
Moderator Action:
You already asked this question, two days earlier.
https://forums.oracle.com/thread/2585158
Stay with your original post. Deliberate multiple posting is the same as spamming the forums.
This new post is locked. -
Since yesterday I am facing problem,when it goes in sleep mode it actually turn off and does not come up after pressing start button but every time I have to hard reset it to turn it on .It is 4 gen running on 4.3.3.Please help
so I have called HP tech support 12 times over the last 6 weeks and still my HP Officejet 4620 loses connection overnight. Of course becasue it was a birthday present I spent more time than I normally would have on this issue. While the tech are very polite they have not fixed my problem and now it is too late to return printer to store. This is a lot of money wasted and I think they need to admit this is a bug in this printer and resolve the problem!!!!!
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IMac 24' unexpectedly goes to sleep mode
iMac 24' unexpectedly goes to sleep mode. CPU fan works on 3500rpm, CPU temperature 38'C.
Does not help
Problem stays the same...
Fan increeses speed till 3500rpm, then turns into sleep mode... CPU at 42'C -
How does OS X determine the idle time to enter sleep mode?
Is it based on no keyboard/mouse activity? Or based on CPU load level? For example, if I run a long program, will the computer go into sleep mode if I don't use the keyboard and mouse?
Thanks. Maybe I did not clearly state my question.
I understand that sleep mode is determined by a set time interval and it can be independtly set for computer and display. My question is regarding the method for determining the set time interval.
Does the set time interval start when I don't use the keyboard/mouse? If I run some applications and provide CPU load to the system, does it still go into sleep mode after the set time interval and stop the applications if I don't use keyboard/mouse?
Thanks. -
Week old IMac G5, Version 10.5.2, goes into "sleep" mode randomly....
My sister has a brand new IMac G5, OS X version 10.5.2, the screen randomly will go black, it still stays on, it's like it goes into sleep mode, but force quit wont work, nothing works, restart is required in order to get out of it.
On another note, when she restarts the computer, and sometimes when she's just starting it up not on a restart, the computer will have colored lines running down the whole screen, when it gets to the blue loading screen, it freezes there, where once again it requires a restart. Problem is, the computer is less than TWO WEEKS OLD. I've had my mac for years and cant figure out the problem, anyone that knows of, or has had similar problems and had them fixed that could help out would be nice. Thanks!In fact, what your sister has is an intel iMac, not a G5, those were discontinued a couple of years ago. She has telephone support for 90 days and should call Apple immediately for a solution to her problem.
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24" imac goes into sleep mode and lights on circuit flicker
Hi -
I have a 24" imac and have found that when the display goes into sleep mode the lights on the circuit flicker.
I have searched the web and other users have complained of the same issue with no resolution.
Here is a similiar post - https://discussions.apple.com/thread/2606099?start=0&tstart=0. The resolution is probably you need to get the iMac serviced, what i'm wondering is what is the problem in the imac that is causing the issue. Is this a defect?
Before anyone questions the circuitry in my house here is what I have verified.
An electrician has come and verified the electric panel is good and all circuit breakers are good. All circuits in my house are copper, no aluminum.
I can plug the iMac into any circuit and the problem starts right when the Imac's display goes to sleep. I have owned the iMac for approximately 5 months now (bought it used) and the problem started about a month ago.
Assuming this has to be serviced I dread to wonder the price .
Thanks for anyones help.The sleep timeout has nothing to do with disk activity. It's based on user input, although some background processes can pre-empt it. If you don't want the machine to sleep automatically, disable automatic sleep in the Energy Saver preference pane.
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Unexpectedly goes into Sleep Mode... All the time!
I've had this Powerbook for about 2 years now, and I've got some problems. About every 5 or 10 minutes, it goes into sleep mode! It acts as if I close the screen, so I wake it up by pressing the spacebar. But sometimes... pressing the space bar doesn't wake it up, not even holding the power button turns it off! I have to remove the battery to restart it! Can someone help please?
By the way, I checked "Power Save" settings in System Prefs and everything seems to be correct.If you have issues with a Mac or display that goes to sleep at inappropriate times, you may have a problem with Energy Saver. Delete the following .plist files and restart:
-/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
-/Users/username/Library/Preferences/com.apple.systemuiserver.plist--
(username is your name or System Administrators name)
-/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist
A restart is very important after deleting these plists. After a reboot your Mac will then generate new ones.
Some, in these forums, have had luck fixing sleep issues downloading the Combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try.
Yours would be the 10.4.7 Combo update. Others reading, download the combo update that applies to you!
Cheers!
DALE -
I just bought an imac in september 2012. And i just find out that my microphone is not working. So i did an apple hardware test and with no problems found? I have sound but no one can hear me, not even the computer. Should i bring it back to the store
Before you go through that trouble open About this Mac > More Info... > System Report > Audio and see if the system actually knows it has a microphone. Then you can look into Applications > Utilities > Audio MIDI Setup and see if the microphone is there, select it and make sure the sliders are set to full. Then in System Preferences look for Sound > Input and make sure it shows up there and the sliders are at least half way up. If none of that works do a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
It is the 5 second timing that initiates the reset.
then go through the process of looking for the microphone again as the reset may reenable the mic. -
How in Ipad 3.2 setup time go to sleep mode[turn off but not shut down]
How in Ipad 3.2 setup time go to sleep mode[turn off but not shut down]?
Go to Settings>General>Auto Lock - tap the arrow and then choose your time setting to put the iPad to sleep.
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My Imac goes into sleep mode but won't come out. The keyboard/mouse won't rouse it and the power button won't do it either. I have to unplug the computer, re-plug it in and then hit the power button. Help?
I looked around the internet and found an old post that seems to have solved the problem. I had a relatively new USB port (powered) that I unplugged and, ta da, the problem disappeared. I'm not sure why this happens (I'm not a tech person) but it seems like this should have been worked out in testing somewhere.
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IMac i7 - Strange CPU-fan problem!
Hi,
my name is Chris and I'm living in Germany. Sorry for my pigeon english, I'm not very good in languages... Nevertheless I will try to describe my problem.
I have received my iMac last saturday. It's an i7 with 2TB hard drive. On sunday suddenly the CPU-fan went nuts, spinning with about 3500 rpm. At that time there was no heavy CPU load at all.
Neither P-RAM- nor SMC-resets fixed the problem, the CPU-fan was running at full speed all the time. On monday morning (the i7 was switched during the night), the problem was still persisting. Hence, I contacted Apple and they promised to send me a replacement for the i7 in about three weeks.
Later on this monday, I received a package with additional 4GB of memory I had ordered for the iMac. Although the iMac was making noise comparable to a 747, I decided to build in the additional 4GB of RAM, just to play a bit around with an "8GB machine". The assembly of the additional memory was pretty easy, basically everything was working fine (memory wise). But the CPU-fan was still continuously at around 3500 rpm.
Afterwards, I decided to clean up the computer a bit by using the "automatic" script within "Onyx". I started the procedure and left the room.
When I came back about 1 hour later, there was total silence in the room. In first instance I wasn't surprised very much, because the iMac was obviously in the sleep mode. But I was really surprised when I woke it up again: The CPU- fan was back to normal, spinning with 940rpm. Almost completely silent.
Any ideas what happened? Can there be a connection between the "fan-went-nuts-issue" and the Onyx scripts?
What shall I do? My iMac is behaving now, but I have already ordered replacement...
Best wishes,
ChrisYes, I have seen this thread, thank you.
When the CPU-fan started to spin at 3800, one of the first thing I tried was putting the iMac into the sleep mode. After I had done so, I woke it up back again almost immediately (about 1 minute later) by pressing the space bar. But for some reason, the iMac woke (with normal fan noise) and then immediately fall back into sleep (after being about 10 seconds awake). A "proper wake up" was not possible, since it was sort of an infinitely loop of waking up and falling asleep. A reboot via the power button was necessary, whereby the fan went back to 3800 rpm.
And then I performed this Onyx-run (as mentioned in my first post), and afterwards the iMac went to sleep mode automatically. It stayed in the sleep mode for about an hour or so, and after my next wake up call it was cured.
Really strange. Either it was cured by the maintenance-things Onyx did to the cache/system files, or by being in the sleep mode for about one hour. I also can't exclude influence of our Lord, since I was behaving in the last year...
Somehow I have lost my trust in that machine. Even after the fan went back to normal behavior I am still not sure if I should cancel the replacement order... I am open for recommendations from your side.
Best wishes,
Chris
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