IMac Turns off by itself!!!

If I leave my iMac on for more than a day, it turns off by itself! After you turn it back on, the date always says it's December 31, 1969 and the time is always many hours ahead, even when it's set to use a network time server. Is there anything I can do about this?
iMac G3   Mac OS X (10.1.x)  

It sounds as if your CMOS backup battery has failed. I don't know if there's anything you can do except arrange to send the unit back to Apple for repair, but you may get a much better answer if you repost the question in the proper forum: this one is for the new Intel based iMacs.

Similar Messages

  • IMac turn off by itself

    Hi everybody
    My iMac has been turning off repeateadly in the middle of a job. When it does it, I cannot turn it on again inmediately. I have to wait to next day, some times even longer. If the cable is plugged in, I cannot turned it on. I've tried everything. Changing the cable, changing the power font, etc. Some people say the problem is with the mother board. As a consequence of this, my disk drive didn't work anymore.
    I have been told this is a factory problem and that Apple is recognizing it. Does anyone know abot it?
    Thank in advance

    T update; I get the blackout without the restarts and tried all the suggested remedies on these forums with no relief. I can see light from the grill covering the ram access port so I do not think it is fully shutdown but will not respond to any wireless input devices so I must press the power bottom on the back to restart It which it does in a normal fashion. The machine does not seem to be running hot (much cooler than my black Mackbook) . I guess I will be bringing it in but I do not feel optimistic given the posts by users who did so and did not get a fix. I think this issue will take some time to resolve. I just wanted to add my two cents.
    See Berry's list of similar posts as follows:
    27-inch / 27" iMac Random Shut down:
    http://discussions.apple.com/thread.jspa?messageID=11791328#11791328
    Random Restarts on Intel based iMac
    http://discussions.apple.com/thread.jspa?threadID=1943134&start=0&tstart=0
    Sudden restarts and shutdowns on iMac
    http://discussions.apple.com/thread.jspa?threadID=1865839&start=0&tstart=0
    And this current one here: 27" Core i7 iMac blacks out then restarts itself for no reason:
    http://discussions.apple.com/thread.jspa?threadID=2258132&start=0&tstart=0

  • Why my iMac 27 2010 turn off by itself?

    Why my iMac 27 mid 2010 turn off by itself?
    I already replaced the Power Supply part number 661-5972. The next thing is replace all the thermal sensors and then the logic board. I do not have any other way to find out what it 's wrong with it.
    Last the same time that the old power Supply. Let it sit for a few hours. Turn back on and works fora few more days or weeks ans suddenly turn off again.
    I am 66, started out with Apple around 87 as an independant service provider here in PR and have never had so much problem with any other mac's than this one.
    Apple support provider here in PR have no expertise what so ever in giving us solutions to problems. Even thought I still doing some support to some of the old customer I am handicap with new technical tools to solve problems within new products. I wish Apple would have consideration on the old ones that help and support apple products without their help.
    Thank you for reading my note!
    Jose A Marrero

    I can relate Jose
    Have you looked under the hood of a newer car, worked on a new toaster or coffee maker..? Most all of them have sealed components that are no longer repairable, you throw the old part away and replace it with a new part or just replace the whole thing.
    Heck' for the most part even the Geniuses at the bar are unable to fix or do anything about most hardware problems. So instead of trying to fix a product that is under warranty, they either send it out or replace it with a new Mac, Pad, Pod or Phone on the spot. 
    As another Apple user like yourself with some hands in experience and some time here in ASC, it sounds more like either a overheating graphic's chip or bad SMC chip than a temperature sensor problem. Both of which the normal Hardware Test will not catch.
    So on that note: I would probably closely monitor all the temperature sensors (especially the GPU temperature) with iStat Pro or Temp Monitor to see if you can catch an overheating component that is causing the shutdown.
    It also might help to post the Consol Message for the shutdown here in the ASC forum.
    Dennis

  • Turns off by itself, don't think it is bad mb?!?

    Hi All.
    I bought this mac at a garage sale about 2 years ago for $150 and it has been working great.
    Lately it has been turning off by itself.
    It is not hot.
    I did some research and people were saying that the capacitors on the motherboard and the powersupply are known to go bad on this computer.
    When I tried to find a serial number on this computer there was not one, leading me to believe that the mb was probably replaced by Apple or someone at some time.
    This is what ASP says:
    Model Name: iMac G5
    Model Identifier: PowerMac8,2
    Processor Name: PowerPC G5 (3.1)
    Processor Speed: 2 GHz
    Number Of CPUs: 1
    L2 Cache (per CPU): 512 KB
    Memory: 2 GB
    Bus Speed: 667 MHz
    Boot ROM Version: 5.2.5f1
    Serial Number (system):
    Sales Order Number:
    Hardware UUID: 00000000-0000-1000-8000-001124CCC858
    2 weeks ago it totally would not turn on so I took the back off, looked at the mb and the capacitors all looked good (to me anyway) then I took out the powersupply, opened that expecting something in there to be all gooey or swollen and everything looked good there too!
    I went back to the internet and found a troubleshooting flowchart type thing on Apples site, and it gave me the idea of checking the little power button on the mb.
    The computer started right up no problem.
    I also looked at the troubleshooting lights on the mb and those were all lit like they were supposed to be.
    I put the computer back together and everything has worked fine for the last two weeks.
    Just now it turned off again.
    I turned it back on, got the apple chime, then it turned off.
    I did it 2 more times, now it is back on. Not sure how long it is going to last.
    The computer in question is not the one listed below, it is my daughters g5. thanks!
    Does anyone know any other things I can try?
    Thank you! Laura

    Apple doesn't publish the meaning of these codes, but the -122, although it could still mean the Logic Board, is probably related to the power supply. But don't hold me to it. The power supply costs around $125, so it's not a terrible gamble to try a new one. The Logic Board is much more expensive. But you might find someone who's willing to replace any bad caps they find for quite a bit less. I've seen these.
    http://www.dttservice.com/imacg5.html
    http://www.badcaps.net/

  • Why does my iPod keep turning off by itself

    why does my ipod touch keep turning off by itself?

    Is it running hot? There are thermal limits that will shut it down.
    As old as your iMac is, have you cleaned out the dust? Dust buildup can lead to over heating issues. Remove any and all things plugged into it including the power cord, Remove the RAM access grille. Vacuum all openings starting with the RAM access area (air intake). Vacuum all ports and plugs, DVD slot and the opening across the top of the rear of the body. Blow compressed air through all your openings and vacuum again to remove any dust you loosend. Reinstall the RAM grille. Plug in the keyboard and mouse if not blue tooth. Insert power cord...
    You are now in a perfect position to 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.
    Here is a link to a Widget to monitor your temps and other operations:
    http://islayer.com/apps/istatpro/

  • MacBook pro doesnt start. When I start my lap top, it shows the apple and the line uploading but it only goes like to 1/3 and then it goes blank for some seconds, then it turns off by itself and turn on again and happen the same, apple logo, etc

    MacBook Pro doesnt start. When I start my lap top, it shows the apple and the line uploading but it only goes like to 1/3 and then it goes blank for some seconds, then it turns off by itself and turn on again and happen the same, apple logo, line .. the noise like-fan going on, then turn off and turn on again. Tried starting holding option command P and R key and didnt work either. Starting to think I have lost all my data inside

    Try a SMC reset.
    http://support.apple.com/kb/ht3964
    It might be helpful if you indicated the exact model/year of your MBP.  Are you running Lion OSX?
    Ciao.

  • My iPod touch 4th generation turns off by itself. How can I fix this?

    My iPod Touch 4th generation turns off my itself. How can I fix this? This is not the first time this has happened. I usually hold down the home button and the power button at the same time for a few seconds and it'll turn back on but this time that won't work. What should I do?

    The Basic Troubleshooting Steps are:
    Restart..  Reset..  Restore from Backup..  Restore as New...
    Try this First... You will Not Lose Any Data...
    Turn the iPod Off... ( if it isn’t already )
    Press and Hold the Sleep/Wake Button and the Home Button at the Same Time...
    Wait for the Apple logo to Appear and then Disappear...
    Usually takes about 15 - 20 Seconds... (But can take Longer...)
    Release the Buttons...
    Turn the iPod On...
    If that does not help... See Here:
    Backing up, Updating and Restoring
    http://support.apple.com/kb/HT1414

  • Why does my iPhone 4S keep on turning off by itself it just turns off when I lock it and I have to reboot it fot iPhone to turn back on

    My iPhone 4S keeps on turning off by itself and I don't turn it off it does it by it self and I can't plug in a charger to turn it on or hold the lock button I have to reboot it please help

    I have an iPhone 4S 7.0.2 and it does the same thing I as just wondering if you found any result on what causes it to do that?

  • My ipod nano 2nd generation turn off by itself

    my ipod nano 2nd generation turn off by itself and when i unplug the USB cable and i plug it again its shows sign do not disconnect then its shows battery low and it turn off again i bought it since 2 and every time i go to the shop to repair it he told me that i don't have the parts to repair it please help any ideas ? thanks

    Try calling the apple customer service maybe they will hel you. 1-800-my-apple(this is the phone number) By the way this problem is very weird. You should call.

  • My 7th generation iPod nano keep turning off by itself

    My 7th generation iPod keeps turning off by itself. I've checked on the internet that i have to make sure the headphone is plugged perfectly and it's totally plugged but my iPod keeps turning off every second. I also have restored it, when it was restoring it didnt turn off, but when it finished, it started to keep turning off again. May anyone help me to resolve my problem?

    If you still not reached 1 year, run to apple store and change it. I have same problem, but during running and stop not often like yours but only one time.

  • HT201263 dropped iphone4 in water and turned off by itself

    dropped iphone4 in water and turned off by itself and now cant turn on, plugged it to itunes and was asking to restor, when i did restore it it would not turn on when i try to restart it was still the same and now keeps on asking to restore would not turn on any help.... please

    You can try drying it out internally by wrapping the unit in a paper towel and putting it in a bag of dry, uncooked rice (or a bag of silica gel pellets, if you have access to those) for a few days. It's very probable that it's been permanently damaged, but it's possible that if you dry it out, it may then work. If after a few days in the bag it still has problems, then you'll need to pay to get it exchanged (by Apple) or repaired (by a third-party repair service, which voids any warranty).
    Good luck.

  • My iphone 4 turned off by itself and will not turn back on. i have tried to 2 methods of recharge and it will not turn on.  can you please help?

    my iphone 4 turned off by itself and will not turn back on. i have tried to 2 methods of recharge and it will not turn on.  can you please help?

    my iphone 4 turned off by itself and will not turn back on. i have tried to 2 methods of recharge and it will not turn on.  can you please help?

  • IMac turns off by it self and does not want to turns on later, do i have to feel the fan at the back?

    1.- The imac turned off by it self.
    2.- I tried to turned on pressing the turn on/off button and it did not do anything.
    3.- I disconected the computer form the wall and wait for some minutes, and it did no do anything.
    4.- After about 20 minutes i tried again and turned on by pessing the on and off button.
    5.- The imac turned off again and disconected form the wall and conected to another electrical contact at the wall, adn it did not turned on.  i wait for some minutes and turned on again, but after about five minutes it turned off again.
    6.- I left the imac connected to the wall for a couple hours and i tried to turned onn by pessing the on/off button and it did not turned on.
    7.- I left all night connected form the wall and tried to turn it on this morning and it did not turn on.
    8.- This time, I only disconnected the imac cord form the back of the computer and left it for a couple of hours, then I concected and turned on
    9.- All the times that the computer turned on it started like a restart and no announce or windows appear telling me about an error or something like that.
    10.- One of the times I touched the computer at the back and felt it hot, not too hot, but I do not how normal is.
    11.- I can feel some very, very little air at the back form the vent.
    What do I hve to do?
    What kind of tests can I do to know if the computer's an is working ok?

    Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine.

  • My razr m just stopped working turned off by itself and will not turn on

    my razr m just stopped working turned off by itself and will not turn on

    raamw,
    My wife has the exact same phone and I have the razr HD (basically the same, just larger screen etc).
    We have run into the same thing a few times, and as stated above by Callie I have found it is a dead battery issue. BUT unlike my previous phone (Droid incredible) that I could usually plug in, wait a few minutes, then at least turn on and use while plugged in, I have found for the M and mine it really took a bit to get it charged.  Kind of like as long as there is some battery you are ok, but once it dies it takes a bit of charging.
    ALSO - I am going to perhaps not use the right terms or words for this, but  I THINK (emphasize think) at least once it wasn't enough to use one of the lower amp chargers.  at least on mine.  tried to charge and charge and didn't seem to work.  Finally I took a charger that I normally need to use for my daughters tablet and use that then it had enough kick.  I will note I think that was the issue.
    regardless each time yes it took awhile before we could turn them on.  ALSO it seemed like it took a much longer time in holding the power button down.  BUT eventually they started up and we were good to go.
    we love our phones, she especially loves the size of the M.  BUT we have learned in the short 2-3 months we have had them, if possible, don't let the thing drain all the way.  just seems to cause a bit of a hastle

  • I am having trouble with my i pad it freezes it turns off by itself and the screen turns blue?

    I am having trouble with my i pad it freezes and it turns off by itselfI and screen turns blue?

    Start by rebooting the iPad by holding both the power and home buttons until the apple logo appears and it restart, ignoring the red slider if that appears.  See if that helps.

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