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You are not logged in. [Log In] AppleCentral » Forums » Mac » Hardware » iMac shutting down while away from computer
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#615350 - 04/13/14 11:05 PM iMac shutting down while away from computer
John Rougeux Offline
Member # -1

Registered: 11/06/08
Posts: 6095
Loc: Louisville, KY
Recently my iMac has somehow turned off when I am away for a bit (not sure time length as I didn't notice).

Tapping on keyboard and mouse result in nothing. Have to hit the power button to turn it back on.

Could it be the power supply?

What can I do to check?

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#615352 - 04/14/14 01:36 AM Re: iMac shutting down while away from computer [Re: John Rougeux]
Acumowchek Offline
Is this thing on?

Registered: 12/30/07
Posts: 4208
Loc: Petaluma, CA
OS? I've had a few sleeping problems with Mavericks that require a power button restart. I hear a woosh from the hard drive, kind of like it stalled…

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#615354 - 04/14/14 01:41 AM Re: iMac shutting down while away from computer [Re: John Rougeux]
yoyo52 Offline
Nothing comes of nothing.

Registered: 05/25/01
Posts: 30520
Loc: PA, USA
If you have the computer set to sleep after some time, that's probably what's causing the shut down. My machine was doing the same thing, and then restarting on its own because I'd set the preferences to do that in case of power failure. And then when I'd go to use the computer I'd get a message that there'd been a problem and did I want to report it to Apple. Since I set the preferences never to allow the computer to go to sleep, the problem has disappeared. The HD goes to sleep, as does the monitor, of course.
_________________________
MACTECH ubi dolor ibi digitus

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#615355 - 04/14/14 02:27 AM Re: iMac shutting down while away from computer [Re: John Rougeux]
Reboot Online   content

Muhahahaha

Registered: 04/22/02
Posts: 15046
Loc: Columbus OH
Make sure under Energy Saver preferences/Schedule it's not set to shutdown.

Shut down, unplug the power from it for about a minute, plug it back in. Wait about 10 seconds and reboot. This will reset the SMC on the logic board.
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#615366 - 04/14/14 04:10 PM Re: iMac shutting down while away from computer [Re: Acumowchek]
John Rougeux Offline
Member # -1

Registered: 11/06/08
Posts: 6095
Loc: Louisville, KY
Originally Posted By: Acumowchek
OS? I've had a few sleeping problems with Mavericks that require a power button restart. I hear a woosh from the hard drive, kind of like it stalled…


10.9.2

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#615367 - 04/14/14 04:11 PM Re: iMac shutting down while away from computer [Re: yoyo52]
John Rougeux Offline
Member # -1

Registered: 11/06/08
Posts: 6095
Loc: Louisville, KY
Originally Posted By: yoyo52
If you have the computer set to sleep after some time, that's probably what's causing the shut down. My machine was doing the same thing, and then restarting on its own because I'd set the preferences to do that in case of power failure. And then when I'd go to use the computer I'd get a message that there'd been a problem and did I want to report it to Apple. Since I set the preferences never to allow the computer to go to sleep, the problem has disappeared. The HD goes to sleep, as does the monitor, of course.


And to Jim:

First thing I checked was the Energy Prefs.

i'll try that SMC reset later on today.

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#615373 - 04/14/14 07:46 PM Re: iMac shutting down while away from computer [Re: John Rougeux]
MacGizmo Offline

What?

Registered: 04/03/02
Posts: 19198
Loc: Arizona
You wouldn't by chance have an iMac with the full 32GB of RAM installed, would you? LOTS of people having kernel panicks and random shutdown issues with the fully loaded version of the 2013 iMac.
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The Graphic Mac - Tips, reviews & more on all things OSX & graphic design.

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#615393 - 04/15/14 12:58 PM Re: iMac shutting down while away from computer [Re: John Rougeux]
John Rougeux Offline
Member # -1

Registered: 11/06/08
Posts: 6095
Loc: Louisville, KY
Nope.




And so far hasn't happened again. Not sure how I can replicate the problem?

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#615396 - 04/15/14 01:22 PM Re: iMac shutting down while away from computer [Re: John Rougeux]
Reboot Online   content

Muhahahaha

Registered: 04/22/02
Posts: 15046
Loc: Columbus OH
Originally Posted By: John Rougeux
And so far hasn't happened again. Not sure how I can replicate the problem?
Was that after the SMC reset?
_________________________
AppleCentral Trivia

MM-MCF Trivia

Call the Doctor

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#615414 - 04/15/14 09:34 PM Re: iMac shutting down while away from computer [Re: John Rougeux]
John Rougeux Offline
Member # -1

Registered: 11/06/08
Posts: 6095
Loc: Louisville, KY
Sorry, no reset.

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