Imac constantly turning off, sporadicly.

So, for about more than a year my mac has been turning off at random. Sometimes more often than not, but it happens atleast once a day.
I have tryed almost every solution, ive braught it in to apple sotre. But there is no problems they say.
Ihave tryed UPS, different sockets, but to no avail
It will work at other peoples houses, so i assumed it was a house problems. So we called in technitians and found no problems with the house, except high voltage. Is that a problem?
is there anything else i can try to resolve this issue?
open to anytrhing..

So, for about more than a year my mac has been turning off at random.
You should have called Apple tech support ASAP while you were under warranty. If you have AppleCare, strongly suggest that you call them and tell them exactly what you stated in your post. Make sure they are aware that the Apple Store told you "there was nothing wrong." You should have insisted especially if you were still under warranty or have AC.
When troubleshooting, make sure nothing is connected to your computer except for the keyboard & mouse. Try the following:
http://support.apple.com/kb/HT3964 Intel-based Macs: Resetting the System Management Controller (SMC)
If need be, take your computer to another Apple Store or an AASP for repairs. Not the one that told you nothing was wrong.
GOOD LUCK!

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My imac G5 turns off on mi then dont want to turn back on at all but after one day turns on mormaly then turns back off again

my imac G5 turns off on mi and dont want to turn back on at all but nex day tuns on normaly then tuns back off again

It could be several possible issues.
1) Your G5 iMac could be overheating. Depending on which model, you might be able to open the back by yourself (not on an iSight model), and using a can of compressed air, youcould blow the dust out of it.
2) The power supply could be going bad.
3) The hard drive could be going bad.
There could be several others.
If you have the original, came with the iMac when purchased new Install Disks, you can try running the Apple Hardware Test to see if it can determine any hardware issues. It can't always find the problem.
Good luck.

Does anyone know why the fan on my imac wont turn off?

does anyone know why the fan on my imac wont turn off?

Peter.L.
Try resetting the SMC, it may take 2-3 attempts. Please post back with the results. If you're not sure how please follow the instructions in Intel iMac SMC and PRAM resets

Well-used iMac suddenly turning off

My not-so-new 20" iMac is turning off on me. I have used this computer, many hours a day, for several years now. For the past 20 months, I've lived in an apartment with old outlets that haven't been replaced, and don't have great contact with the electrical plugs. I've been using a power strip, and the computer only turned off when someone knocked the plug out of the outlet or bumped "reset" on the power strip.
Starting yesterday, my computer started turning itself off (apparent power failure) without anything getting bumped. I'm not seeing any changes in the lights around, me, either, so I don't think that power fluctuations are the proximate cause. I've fiddled with all of the pulgs, unplugged and replugged them, and the problem is getting worse: my computer is shutting off more often. I'm using my spouse's laptop to ask this question, because it's gotten to the point where my comptuer really isn't useable. I've gotten great advice from these forums before, and I'm looking forward to getting good advice this time.
Could a power regulating power strip solve my problems? I'm guessing no, but should I do this in the future, to prevent damage to my computer? More importantly, what is likely wrong with my computer, and about how much would it cost for me to replace the part, or get it fixed at the Apple store? I did not purchase any extended warranties, so this computer is completely out of warranty.

It's been a month since I first posted, and I've got more clues and details now. After I posted my question I realized that my computer is and has been on a surge protector (and the protector light is light), so on later reflection I don't think the problem is the steadines of the power.
den.thed's suggestion seemed to work at first, although I think the longest my computer has gone without shutting down in the last month was about a week, and at this point resetting the SMC doesn't seem to be helping (not that I've turned the computer back on without unplugging it, so I haven't tested this precisely).
I leave my computer on at night (sometimes I put it to sleep, sometimes it puts itself to sleep, but sometimes something happens and the computer doesn't put itself to sleep, or my cats step on the keyboard and wake it up), and it has not shut down at night. It only shuts down when I'm sitting in front of the computer, using it. This made me think I might be having a software problem, so I tried avoiding using specific programs, but I can't isolate a specific program that is always open or always being used when my computer shuts itself down. I think my computer has only shut down while I'm typing, but I'm not certain on that one. I'm using a logitech wireless keyboard (because I spilled water on and destroyed the original keyboard), and (because I only have the one keyboard at the moment) I haven't tried using another keyboard.
Last night I had the realization that the times my computer was going longer without shutting down was when I'd unplugged my backup HD running Time Machine (because of the limited number of USB connections on the computer). I am not certain if my computer has ever shut itself down with the external HD attached. I have had successful saves to Time Machine on my external HD while dealing with this problem.
But these two clues: maybe shutting down only when external HD is plugged in, and definitely only shutting down when when I'm sitting at the computer, actively using it, don't seem to me to point to the same problem.

My imac keeps turning off and restarting by itself

My iMac keeps turning off and restarting by itself. Any ideas why and how to fix it? Thanks.

Hi ...
Try Resetting the System Management Controller (SMC)

My iPhone 3GS is constantly turning off without warning. Help?

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Basic troubleshooting is reset, restart, restore.
Although the issue described could be a battery or system board issue.

Why does my phone constantly turn off on its own as if the battery is dead?

why does my phone constantly turn off on its own as if the battery is dead? Its so annoying! Every day once my battery life span is at about 40%, my phone will start shutting down with the dead battery sign once it is down. Then after about 3 minutes i can turn it back on.

Tons of people have this problem with iPhone 4S and 5, whether they are on iOS 6 or 7. You can only hope that one day Apple realizes that this bug (software ? hardware ?) is a *real* pain. So far, they haven't paid attention.
http://translate.googleusercontent.com/translate_c?depth=1&hl=fr&ie=UTF8&prev=_t &rurl=translate.google.com&sl=fr&tl=en&u=http://www.igen.fr/iphone/bug-40-de-bat terie-et-l-iphone-s-eteint-sans-raison-108794&usg=ALkJrhiyt4PMijJLAQy79_dCSpm3HW gGdg

IMac display turns off but computer doesn't sleep.

After upgrading to Mavericks I've noticed a problem where my iMac display will turn off but the computer will never enter into actuall sleep mode, I know this because I can constantly hear the fan humming. I have the Energy Saver settings set to sleep the display after 10 minutes and sleep the computer after 15 minutes. However even well after 15 minutes of inactivity (and the display long having turned off) I can still hear that the computer is not sleeping due to the fans still being on.
I decided the troubleshoot the problem using a Terminal command and I was able to narrow it down to single potential cause. According to "PreventUserIdleSystemSleep" the problem stems from a "URLConnection in progress" issue. How does one go about determining what is causing the URL Connection so I can kill the prompt and see if that solves the sleeping issue?
Here's a screen shot of the Terminal output:
Also, if I choose "sleep" from the Apple Menu, the iMac will go to sleep as normal (fans and harddrive sleep).

Reset the SMC and the PRAM.
Reset the SMC
• Shut down the computer.
• Detach the computer's power cord.
• Press and hold the power button for 5 seconds.
• Release the power button.
• Reattach the computers power cable.
• Turn on the computer.
Reset the PRAM
• (Re)start the computer
• Immediately press & hold the CommandOption+PR keys
• Wait for two startup chimes
• Release the keys and allow the computer to boot.
Dah•veed

My macbook keeps turning off sporadically

while I am working on something or watching a movie or doing something on my macbook pro, it will sporadically turn off. There are never any common factors between one instance and the next, and I can't seem to figure out why my computer would just turn off like this, then turn back on in a few seconds with no problems. My power cord is usually hooked up, and the computer doesn't seem to be getting too hot, does anybody have any ideas?

If you open the Console utility and look at the console log and system log do you see anything that may resemble a trigger? Yes it's difficult to read but events are logged here so this is the best place to look. The best time to do this is immediately after an event BEFORE doing anything else (apart from restarting).

IMac suddenly turned off

Hi,
I was working on a word document and my iMac just suddenly turned off and cannot be turned back on.
I have tried SMC reset but no luck. Can someone please help?
Thanks.

Try plugging into another outlet it may be the outlet you are using. Does it make any sound at all or have any video.
Finally complete your profile, you will not get help without giving us any clues. The profile is there for a reason, your post is like says "my car is broken what is wrong?"

IMac G5 turns off by itself, hard to turn back on...

I purchased my iMac in 2004 - so it looks like I'm past Apples extended "problem parts" warranty. At one point, I had to replace the midplane board, which Apple sent me and I did myself. No biggie - I've built a number of PCs myself.
OK, so if I walk away from the iMac while it's running, it will shut off after a short period of time. It doesn't go to sleep - it just shuts completely off. If I keep it busy doing something (running iTunes music or something), it will run all night with o problem.
Once it's off, it takes any number of tries - two or three, to 20 or 30 sometimes, of hitting the power button to get it to turn on. Once it's on, it's fine again. I read somewhere that there were some bad capacitors in a number of units, but thought the midplane replacement probably took care of that.
So, I'm probably looking at a bad power supply? Would that be the consensus? Is there another component I need to consider replacing as well?
Don't mind trying to replace this myself as well - what would be considered the best place to order a replacement?

You can find a power supply [here|http://www.welovemacs.com/6613350.html], but I would first look at your Console at the time the machine shut off to see whether it notes "maximum temp exceeded for more than 30 seconds" to make sure it a power problem, although I'm puzzled as to why it doesn't turn off when stressed. Also, take a look at the caps on the motherboard and see if they are swollen or oozing.
Message was edited by: MGW

QIP 7100 2 boxes constantly turning off

I've got 2 QIP 7100 2 boxes
they turn off constantly (go into standby)
this messes with my DVR!
I don't want verizon's DVR, i want my DVR to work. It would work great if the boxes would stay on for more than 30 minutes to 2 hours at a time.
What can be done?
thanks

The only I can suggest is to reboot the STB then go back in and check to make sure the sleep timer is set to never and see what happens.

IMac no turn off

My iMac Intel (2010) no turn off.
Thank you

Press and Hold the Power button until it shuts off. Then I would recommend you Reset the SMC and the PRAM:
Resetting the System Management Controller (SMC)
Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
Hope this helps

Fan running after iMac is turned off

After I turn off or put to sleep my 3 day old 25.5 " imac, the fan comes on and runs at high speed. The only way to stop it is to turn the power off on the wall plug

Intel-based Macs: Resetting the System Management Controller (SMC)...
http://support.apple.com/kb/HT3964

Imac Wont Turn Off

Over the last few weeks my Imac will not turn off. When I shut it down it clears the desktop and then just leaves the wallpaper displayed, but never turns off. It eventually goes into sleep mode, but to turn it off I have to manually push the power button.

Do you have something hanging? Sometimes my browser will interfere. Do you get any kind of message?
In any case, try resetting your PRAM and see if that helps.

Imac constantly turning off, sporadicly.

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