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Helpful answers
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Apr 25, 2015 7:00 AM in response to vanstar sydneyby ditocura,Hello! My imac 2013 late is with this same problem. I left it on the official technical support of Apple. They formatted HD but the problem still continues after two weeks without appear. Did you solve it?
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Apr 30, 2015 6:58 PM in response to ditocuraby vanstar sydney,Well, I am shutting down and removing power cord from the mac every night. Updated to OS 10.10.3 COMBO version. Repairing permissions often.
This allows my late 2012 27" i7 iMac to work most of the day without sudden shutdowns. Yes, it's a mere work-around, and not a final solution.
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May 1, 2015 10:55 AM in response to vanstar sydneyby ditocura,I Have exactly tais same problem. My iMac is the same model of yours. Late 2012. Let's keep contact here! I will leave my iMac on the assistance again.
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Jan 1, 2016 2:40 PM in response to vanstar sydneyby MfromFremont,Hi,
Did you guys figure out the problem. I see the exact same problem with my iMac, however the extended test did not show any issues. Although I have seen it shutting down when not using LR, but happens frequently when using LR. It restarts only after disconnecting the power supply for few minutes.
Thanks
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Apr 23, 2016 10:36 AM in response to vanstar sydneyby Luispq,Any answer yet? My iMac has the same problem, if i just surf in the web nothing happens but with Lightroom or some other demanding graphic app the shutdown happens. I guess the problem is logic board, but i saw here in discussions guys with the same problem that changed everything on the computer and the problem persists...