24" iMac won't turn on after power failure overnight

Playgear

macrumors regular
Original poster
Apr 10, 2010
237
17
Hey all,

Just before I start, my AppleCare ran out earlier this year in February, so I'd rather not have to take it in the Apple if I can avoid it.

So, I left my iMac on overnight last night to finish downloading some stuff.
I woke up and all our clocks are flashing, so we must've had a blackout.
Anyway, I went to check the progress of my downloads, and the iMac was off.
I pushed the power button and nothing happened. No fan noise, HDD noise, nothing. I've been trying for almost two hours now and nothing is working.

I've already tried resetting the SMC and checking the RAM modules, which seem to be fine. I can't try anything else (ie resetting PRAM) because it won't turn on to boot. Nothing happens.

Can anyone offer any advice?

Thanks!
 

LoneRider

macrumors member
Aug 6, 2010
38
0
Lake Stevens WA
I am new to Macs, but my PC experience is if there is nothing at all when you hit the button, no sound, fans, etc. it is most likely a blown power supply.

I am assuming you checked your breaker and any power strip breaker? Did you have it on a surge protector or (better yet) a UPS?
 
Comment

Darth.Titan

macrumors 68030
Oct 31, 2007
2,733
443
Austin, TX
Sounds like you might have suffered more than a garden variety power outage. A power surge might have cooked your power supply.

Do you use a good surge protector? Cheap ones offer little, if any, protection.
I'm sorry for your misfortune, but your homeowner's insurance might be able to help.
 
Comment

Vylen

macrumors 65816
Jun 3, 2010
1,026
0
Sydney, Australia
If you didn't have a surge protector, then chances are you killed the power supply and you need it replaced by Apple and fork over some cash.

If you did have a surge protector, there's a slim chance your power supply was killed but assuming you have a good protector (e.g. Belkin), they'll cover the cost of damage/repairs so get into contact with them - since they always offer a lifetime damage insurance thing.
 
Comment

Playgear

macrumors regular
Original poster
Apr 10, 2010
237
17
If you didn't have a surge protector, then chances are you killed the power supply and you need it replaced by Apple and fork over some cash.

If you did have a surge protector, there's a slim chance your power supply was killed but assuming you have a good protector (e.g. Belkin), they'll cover the cost of damage/repairs so get into contact with them - since they always offer a lifetime damage insurance thing.
Did have surge protection. Turns out that the iMac itself tripped the upstairs power circuit. So I guess the power supply is dead and I'm off to the genius bar to have it repaired.

Thanks anyway everyone!
 
Comment

megap

macrumors newbie
Jun 1, 2012
1
0
Try a hard reset

This has happened to me twice in the past week, seeing as we have had some pretty nasty storms. The second time, I even shut down our Mac when I heard the storm starting, but we still had the same problem the next morning after a power outage.

The solution ? I unplugged the Mac from behind the screen, not the outlet end. I left it unplugged for about 30 minutes. After I plugged it back in, it started like a Ferrari. Happened twice and worked twice.


Good luck.
 
Comment

Chrisg2014

macrumors regular
Aug 23, 2010
228
0
USA
did you try a new outlet? If not its your power cord. Try and order a new one off amazon, it that doesn't work. Your going to have to take it to a professional. It doesn't have to be apple. Look on Yellow pages or something like that for computer experts
 
Comment

kkbyrns

macrumors newbie
Jun 4, 2012
1
0
Thank you megap!

This has happened to me twice in the past week, seeing as we have had some pretty nasty storms. The second time, I even shut down our Mac when I heard the storm starting, but we still had the same problem the next morning after a power outage.

The solution ? I unplugged the Mac from behind the screen, not the outlet end. I left it unplugged for about 30 minutes. After I plugged it back in, it started like a Ferrari. Happened twice and worked twice.

Good luck.
This solved my problem! I'm so relieved. Thank you! :D
 
Comment

Similar threads

  • Ben6127
4
Replies
4
Views
673
  • rycmurray
5
Replies
5
Views
662
Replies
1
Views
621
  • _Tony
2
Replies
2
Views
569
  • macbabs5
5
Replies
5
Views
718
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.