IMac 5K won't turn on after 3 weeks.

I have used only for 3 weeks.
Suddenly, iMac screen turned to black.
There are no clue of turn on.
I brought it to apple store on 4/16 and it is still in repair.
About 1 week ago, they were waiting for logic board and on Tuesday I got an call saying they will receive it shortly and still in process.
I used 3 weeks and I am waiting more than 3 weeks to get the product and be repaired.
Does any one have similar issue? How long does apple store normal take for repair iMac?
Am I just bad luck?

I have been having exactly the same problem as Mhuntet11.
My 2010 i3 iMac will not turn on after losing power, which includes being unplugged or the power being turned off.
It has happened to me 4 times now. In each case - nothing will get it started. But on each occasion - about 2 days after the power cut - the iMac will start up again, good as new.
I have also experienced the other thing that Mhuntet11 said:
"when it won't turn on I plug it into a different outlet and if it does turn on I can unplug it and put it back in the original outlet and it works fine"
Yep - once, after 2 days of trying every power point in the house, I finally started up in the kitchen. Not very practical, so I bit the bullet and powered it down again and moved it back to the office. It stared fine.
Does this sound like a fault that should be serviced? Or is there some re-set technique I do not know about.
I have followed the SMC reset procedure and it does nothing

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I have been having exactly the same problem as Mhuntet11.
My 2010 i3 iMac will not turn on after losing power, which includes being unplugged or the power being turned off.
It has happened to me 4 times now. In each case - nothing will get it started. But on each occasion - about 2 days after the power cut - the iMac will start up again, good as new.
I have also experienced the other thing that Mhuntet11 said:
"when it won't turn on I plug it into a different outlet and if it does turn on I can unplug it and put it back in the original outlet and it works fine"
Yep - once, after 2 days of trying every power point in the house, I finally started up in the kitchen. Not very practical, so I bit the bullet and powered it down again and moved it back to the office. It stared fine.
Does this sound like a fault that should be serviced? Or is there some re-set technique I do not know about.
I have followed the SMC reset procedure and it does nothing

Old imac won't turn on after a week of inactivity

Hello,
I'm aware this question was answered elsewhere on this forum but the issue there seemed to be that the imac had been moved and/or jolted. In my case, I went to New York for a week and when I came home the imac just wouldn't turn on. I've bought a new power cable, checked all the connections, disconnected peripherals, tried command/control/power etc. Nothing. I've even tried starting from a Norton utilities disk.
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Hi dancebaby,
Thanks for visiting Apple Support Communities.
Start with these troubleshooting steps if your iPhone does not turn on:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIs and corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
Best,
Jeremy

What to do now when my iPad won't turn on after I turn it off. It shows only the apple logo. I am sure it has above 70% charge as when I sync my iPad it shows necessary detail in iTunes. I have tried, HOME & POWER button, but did not work.

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First try a Reset ( No Data will be Lost )
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If no joy... Try a Restore...
1: Connect the device to Your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
Restoring > http://support.apple.com/kb/HT1414
Make sure you have the Current Version of iTunes Installed on your computer
iTunes free download from www.itunes.com/download
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Note on Recovery Mode.
You may need to try this More than Once... Be sure to Follow ALL the Steps...
After you have Recovered your Device...
Re-Sync your Content or Restore from the most Recent Backup...
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Hi John,
Thanks for the additional information. What I would try next is resetting System Management Controller:
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
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http://support.apple.com/kb/ht3964
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Hey! Don't mind.
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I would be concerned too if my iPod nano was not powering on. I found an article for the 6th generation iPod nano that has steps you can take for an issue like this (the only difference for the 7th generation iPod nano is the steps you will take for the reset. I included the steps to reset a 7th generation iPod nano below):
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Connect iPod to power for at least ten minutes to ensure that the battery has enough charge to allow iPod to turn on.
If iPod does not turn on after ten minutes, try resetting the device while it is still connected to power. Reset the iPod by holding down the Sleep/Wake button and the Volume Down button for at least eight seconds or until you see the Apple logo appear.
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http://support.apple.com/kb/ts3474
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iPod nano not appearing in iTunes
http://www.apple.com/support/ipodnano/assistant/itunes/
Thank you for using Apple Support Communities.
Best,
Sheila M.

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Hello amonar,
Thank you for using Apple Support Communities.
For more information, take a look at:
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http://support.apple.com/kb/ts3281
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IMac 5K won't turn on after 3 weeks.

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