Intel Mac :: 27" Turns Off As If It Short-circuits?
Feb 9, 2012
I've only noticed this happening when I'm using Photoshop CS5... I have an iMac 27" with: Â
Intel Core i5
2.8 GHz
16GB MemoryÂ
(Mod identifier: iMac11,3)Â
WHEN I USE PHOTOSHOP, and I use the free transform tool to enlarge (only when I enlarge) an image, the computer turns off completely, instantly without any warning. Just straight to 'OFF' mode. I have to start it again with the power button. No reports of unusual behaviour come up on the screen, it just shuts off as if there has been a power cut. Nothing else shuts off from the power supply, just the iMac so I know the problem is definitely internal (within the iMac).
Info:
iMac, Mac OS X (10.6.7)
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May 20, 2012
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iMac
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May 3, 2012
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?
Info:
iMac, iMac mid 2011
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May 23, 2012
I got home to find my mac was unresponsive. I thought it had fallen to sleep so i kept pressing keys on the keyboard and clicking the mouse. Nothing happened, I tried everything. So I turned it off by holding down the power button and turned it back on. But then 10 mins later while using it, the screen just instantly turned off! The iMac was still running, it even had the music still playing in the background from iTunes, but again it was unresponsive to my commands. After 1 minute the music turned into an awful static cry for help. So i turned it off. Here i am again on the Mac after turning it back on, but i'm scared it could just go again any second.Â
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iMac (20-inch Late 2006), Mac OS X (10.7.4), 2.16 Ghz, 3GB Ram, 256MB Gfx 1TB HD
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Apr 18, 2012
I read a lot about that issue but I found replies about imacs that wont turn on. But my Imac after the problem, turned on one time.
My issue is that my imac was working like a charm. The day before yesterday, at night, i had an automatic update of firefox and after i switched it off normally.
The day after, at morning, I tried to turn it on but it was behaving like it was not attached to the electricity.
I started to read and I found all that solutions so I did the following:
1. Tried other cables (for power supply)
2. Tried other plugs (in different rooms)
3. Put out the ram sticks and cleaned with a blow dryer the sticks and the space inside the imac so the dust goes out.
4. Tried the reset of SMC with no success as it could not be turned onÂ
I tried everything and after I leaved the mac alone, (3-4 hours) and after i just clicked the button and it was on. I left it all night long switched on so that i save my data and I found it on, this morning.Â
So this morning I did everything to reset the SMC. I put it in sleep mode, restart it, shut it down, put out the cable for 15 sec, put it back, wait 5 sec, but it wont turn on again. I know that there are a lot of responses for the same issue, but I didn't find one that the imac turns on periodically.
Info:
iMac, Mac OS X (10.7.2)
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