Imac with black screen, backlight doesn't turn on

I was just wondering if anybody got the same problem (maybe found a solution):
Since i got my imac 2 weeks ago, it always had problems to start up, so it seemed. I figured out that it is just the backlight not turning itself on every start up. So far i tried the new EFI (B03-something), resetting ram (cmdopt+pr), shared screen with a macbook (it is properly working), unplugging it and dvd-start up.
Funny eneough, last time it worked was straight after the efi update, although the backlight was going crazy. anyways forcing the display to sleep once and waking it solved the problem. as i was doing a TM-backup (Airdisk, so took quite a long time) the pc didn't sleep, just the display did. Everything fine so far (waking it was no problem at all), but right after the TM-backup the pc went into sleep-mode. guess what? no way to reactivate the backlight!
anyone found a solution to this? I reckon it isn't simply about the hardware and its not just the software, so it might be the efi itself => so, there should be more out there with this kind of problem.

Ok, riddle solved: multiple hardware failure. It couldn't be fixed, so apple called immediatly and offered a new imac, new model as well, so I'm happy (if the new one works ). Must have been quite a tricky case, but I can't complain as i got a really good support during the time.
Hopefully the new one will arrive within the next week.

Similar Messages

  • Yoshmite loading my iMAC with black screen.

    Hi,
    i have two iMacs and I've downloaded yoshmite on both of them. However, one iMAC loads with a white screen with apple logo and one screen loads up with a black screen and apple logo, yet they both have yoshmite. is this normal?

    Ok, riddle solved: multiple hardware failure. It couldn't be fixed, so apple called immediatly and offered a new imac, new model as well, so I'm happy (if the new one works ). Must have been quite a tricky case, but I can't complain as i got a really good support during the time.
    Hopefully the new one will arrive within the next week.

  • 4s bricked after trying new update, stuck with black screen with apple logo how can i fix this

    Update bricked my 4s
    phone , stuck with black screen with apple logo .. 
    how can I fix this

    Greetings r1042,
    Welcome to the Apple Support Communities!
    I understand that your iPhone is not booting up past the Apple logo. In this situation, I would recommend working through the troubleshooting steps located in the attached article.
    If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support
    If your device gets stuck during startup
    When starting up, you might see the Apple logo or a red or blue screen for a long time, or your device might restart again. Try these steps:
    Make sure that you have iTunes 12 or later on your computer.
    Put your device in recovery mode.
    When you get the option to restore or update, select Update. This will reinstall iOS without erasing your data.
    Have a great day,
    Joe

  • Won't boot into system (Black screen/ backlight on) -  faulty logic board?

    My iBook g4 12" 1.33 Ghz doesn't want to boot into the system.
    1. Start computer (chime sound)
    2. Apple logo on grey background appears
    3. Spinning wheel below Logo appears
    4. Screen flicker, big vertical zigzag appears, black screen (backlight is on)
    5. Shift key work (led on/off)
    6. Num Lock key works (led on/off)
    7. no responses with any other keys on keyboard
    What I tried so far
    1. Reset PRAM & NVRAM & PMU
    2. Put original installer disc in, press C start from DVD - same as above happens
    3. Boot from external hard drive with operating system over Firewire - same as above happens
    4. Mounted iBook drive as external drive with target mode - Other computer boots fine with iBook drive
    5. Attached an external monitor, which doesn't get a signal
    6. Run Hardware test over DVD - Diagnostics all fine (Screen fine all the time, running through all diagnostics)
    7. Tried pressing on the graphic chip, as some forum entries suggest - didn't change anything
    8. Start in Safe mode with [shift key] - no indication that in safe mode, same faults
    9. Start in [single-mode] (see image http://www.somethingonline.org/dl/pb/singlemode.jpg)
    Don't know what else to try
    Any help appreciated

    By booting off of various other drives (optical and external HD) and getting the same results, I think you are correct in assuming that something else is wrong in the hardware. You might make a call to one of the places that repairs books (like the ones in back of MacWorld) and see what they charge to diagnose and repair. But it may just be time to get a new machine. I'm in the same place myself right now; my G4 iBook seems to be on the way out.

  • Imac  have black screen. Start Computer sound come on, no picture. The last time I used the computer I put it to sleep, it never came back.  i tried everything that was suggested including puting in the start up disk.  The disk would not eject.  Some one

    Imac  have black screen. Start Computer sound come on, no picture. The last time I used the computer I put it to sleep, it never came back.  i tried everything that was suggested including puting in the start up disk.  The disk would not eject.  Some one suggested how to remove it and that did work.  Computer going to Apple hospital Tues. July 3,  thank you for all the suggestions.
    Phyllis33

    There is nothing wrong with the OS update.
    Delete ALL your email accounts.
    Restart Playbook
    Put the accounts back and ensure they are all set with PUSH ON.  Manual (push off) will burn battery.
    Similarly delete your wifi connections and add back when required. 
    Turn off wifi is not connected to wifi. 
    Any "hunting for connection" in email or wifi will burn up battery.

  • Macbook pro-Freezes with black screen at start up.

    Macbook pro-Freezes with black screen at start up. I've tried inserting the Mac OS X install disc to run the hardware test(Restart and hold down D), But it still does nothing. Just the black screen. Now I can't get the disc out. I've tried holding down the track pad key upon start up but that doesn't work neither.
    What do I do??? Please help.

    Remove the battery to find your serial number in the battery bay. Then you can look your MBP up on EveryMac.com:
    http://www.everymac.com/ultimate-mac-lookup/
    That will give you all the information on your Mac.
    This is assuming that you have the MBP with the removable battery and not the unibody. The unibody has different graphic chips.
    Good luck!
    Message was edited by: S.U.

  • Keyboard backlight doesn't turn on auto in dark

    hi i bought macbook pro retina 13(osx mavericks) few days back i observed that my keyboard backlight doesn't turn on auto in dark i have to manually turn it on every time so i want to know whether apple has removed this auto turn on in new mavericks or is i m having a issue with my keyboard

    Auto keyboard backlight still exists: System Preferences -> Keyboard -> "Adjust keyboard brightness in low light". Is that option selected? If so, deselect and select it again. If that doesn't work: Intel-based Macs: Resetting the System Management Controller (SMC)

  • Stuck with black screen with Apple and download bar approx 1 quarter done. Downloading Yosemite. It has completely stopped. I can't access anything. Please help

    Stuck with black screen with Apple and download bar approx 1 quarter done. Downloading Yosemite. It has completely stopped. I can't access anything. Please help

    You should really read the manual.
    "How do you restore from backup? "
    Restore.  When given the choice, choose to use backup.
    "And how can I check to see if the pics and videos are on my computer somewhere first??"
    They would only be where you put them.  What program did you use to import them?  Pics/vids taken with ipod are not part of the sync process at all.  You should be importing them just as you would with any digital camera.
    If you did not import them, then they are not on your computer.

  • QuickTime runs .avi-file with black screen

    I've recorded my little daughter with our new digital camera and have loaded it on the computer, but QuickTime run it with black screen and without any sound. clips recorded with my mobile phone are running without any problems.... what can I do?

    I tried to open GSpot.exe, but it says:"Error opening Data file C:\Dokumente und.....\emp\wza58c\GSpot27.dat: (where i downloaded it) This file must be available in the current working dir or the .exe dir. Please ensure you are not attempting to run GSpot from inside a ZIP file."
    When I click "ok", it says Invalid gspot.dat file:"
    sigh
    What next?

  • My IPad2 has a black screen and won't turn on. It worked perfectly last night and has no response this morning.

    My IPad2 has a black screen and won't turn on. It worked perfectly last night and it is completely black this morning. It is fully charged.

    Frozen or unresponsive iPad
    Resolve these most common issues:
        •    Display remains black or blank
        •    Touch screen not responding
        •    Application unexpectedly closes or freezes
    http://www.apple.com/support/ipad/assistant/ipad/
    iPad Frozen, not responding, how to fix
    http://appletoolbox.com/2012/07/ipad-frozen-not-responding-how-to-fix/
    iPad Frozen? How to Force Quit an App, Reset or Restart Your iPad
    http://ipadacademy.com/2010/11/ipad-frozen-how-to-force-quit-an-app-reset-or-res tart-your-ipad
    Black or Blank Screen on iPad or iPhone
    http://appletoolbox.com/2012/10/black-or-blank-screen-on-ipad-or-iphone/
    What to Do When Your iPad Won't Turn On
    http://ipad.about.com/od/iPad_Troubleshooting/ss/What-To-Do-When-Your-Ipad-Wo-No t-Turn-On.htm
    iOS: Not responding or does not turn on
    http://support.apple.com/kb/TS3281
    Home button not working or unresponsive, fix
    http://appletoolbox.com/2013/04/home-button-not-working-or-unresponsive-fix/
    Fixing an iPad Home Button
    http://tinyurl.com/om6rd6u
    iPad: Basic troubleshooting
    http://support.apple.com/kb/TS3274
     Cheers, Tom

  • What can i do to get my phone working. It went to a black screen when I was playing a game. I pressed the power and home button then it showed the apple logo and went back to a black screen. Doesn't came on, show a charging sign, read on iTunes.

    What can i do to get my phone working. It went to a black screen when I was playing a game. I pressed the power and home button then it showed the apple logo and went back to a black screen. Doesn't came on, show a charging sign, read on iTunes.

    Press and hold the home and power buttons for 15-20 seconds until the white Apple logo appears.

  • Ipod touch 4G stuck on swirling motion with black screen

    So I jailbroke my ipod with absinthe a few days ago and everything has been working fine but today i used an app i downloaded from cydia (cant remember the name) and it started to respring and went on for a long time so restared my ipod and everything but it still came back to the same screen of a swirling motion with black screen after passing the apple logo. I tried restoring the ipod on itunes but an error keeps occuring and it wont allow me to restore. Itunes wont read my ipod either. My ipod will not allow me to do anything. What should I do?

    Go elsewhere. Jailbreaking voids the Apple warranty. It also means that you will not get any help from Apple, including from this Apple forum.

  • Iphone 4s.  Phone dies with black screen intermittently. In spite of reboot attempts it wont come back for 10-15 minutes later with reboot.  About three times in the last two weeks since IOS6 upgrade.  One time the phone felt pretty warm.

    Iphone 4s. My phone dies with Black Screen  intermittently.  It will stay dead in spite of hard reboot requests for 10-15 minutes. Then it will come back. The battery is plenty charged.  This has happened about 3 times since upgrade to IOS6.

    You're in luck! Your phone is still covered by the one year Apple warrenty. I would visit your local Apple retail store, or contact Apple over the phone. They should be able to help you out best!

  • Bios update failore with black screen and 3 time flashing, my product name is (Pavilion g6-2162se) .

    Hi
    I have Hp Laptop, my product name is (Pavilion g6-2162se), I downloaded The drivers from the page, when I installed all drivers, the bios updatede to, but its failore, and now my computer not working means with black screen and 3 time flashing .
    please help

    Hi,
    Check if this helps:
    Restoring the BIOS
    If it is blinking 3 times it usually indicates memory issue..So you can try reseating the memory modules or try one memory at a time in each slot..
    Refer the links below:
    HP Notebook PCs - Troubleshooting LED Blink Codes or Beep Codes During Startup or Boot
    Removing and Replacing a Memory Module for HP Pavilion g6-2000, g6-2100, g6-2200 and g6-2300 Noteboo...
    Note:
    If you have HP Support Assistant installed on the computer(The Blue Question Mark) then open it ==> Complete all pending Updates & Tuneups==> Restart and Check. It may solve your problem
    Although I am an HP employee, I am speaking for myself and not for HP.
    **Click on “Kudos” Star if you think this reply helped** Or Mark it as "Solved" if issue got fixed.

  • Toshiba sattelite pro ( SPM30 ) problem with black screen and white cursor

    I have a toshiba SPM30 from a friend and I couldn't succed to resolve the problem with black screen and white cursor.I can enter in bios using F2 and I can use F12 but is not booting, I have some CD and DVD with Win Xp but it seeams that is not booting.I've traied to change the order in boot order: first CD/DVD and after HDD but still is not working...I saw that a HDD I can see details about it but at CD/DVD I can't see...I think that the CD/DVD is not working( but I can see the light and hear the sounds when I put a bootable CD or DVD)...Please, if someoane can help me......( byt the way I've traied to remove the bios battery and still is not working...)

    Try f8 and try the repair your computer options
    This explains advanced start up options:
    http://windows.microsoft.com/en-us/windows/advanced-startup-options-including-safe-mode#1TC=windows-...
    This explains start up repair:
    http://windows.microsoft.com/en-us/windows/startup-repair-faq#1TC=windows-7
    A system disc can be used for these repair options also, in your case if the DVD drive is not working you can use an external dvd drive if you have one.
    S70-ABT2N22 Windows 7 Pro & 8.1Pro, C55-A5180 Windows 8.1****Click on White “Kudos” STAR to say thanks!****

Maybe you are looking for