NATMARK28

Q: Screen black iMac 27inch

I have an:

Apple iMac 27 inch All-In-One Desktop PC (Intel Core i5 3.1GHz Quad-Core Processor, 2X2GB RAM, 1TB HDD, AMD Radeon HD 6970M with 1GB graphics)


I purchased the machine in August 2011. Recently the screen went black but you could still hear the chimes and the computer working.


I took it to the local Apple store and a Genius said that the LCD screen need replacing, we agreed a price and the work was due to take place last week.

Then a couple of days later I had a strange phone call saying that there was a problem with the logic board and it needed to be replaced doubling the original quote for the repair.


I have asked what is wrong with the logic board and they have said "The logic board is the main brain of the computer. Our technicians cannot isolate the problem to a specific component of the board but we are as certain as we can be that this is the component which is causing you the issue based on the tests we have run against your machine."


Can anyone explain what this means, they have also stated that the computer will work fine if I connect it to an external monitor. I am tempted to buy an external monitor as this is a more cost effective course of action.

iMac (27-inch Mid 2011)

Posted on Jul 24, 2015 12:57 AM

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Q: Screen black iMac 27inch

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  • by rkaufmann87,Helpful

    rkaufmann87 rkaufmann87 Jul 24, 2015 5:51 AM in response to NATMARK28
    Level 9 (58,746 points)
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    Jul 24, 2015 5:51 AM in response to NATMARK28

    There are very few individual components on an iMac that are replaceable. Unlike an old PC tower that has a Main board with lots of slots in it for other components like a graphics board, sound board, etc. an iMac uses one board an almost all components are permanent fixtures on that board.So if one component goes bad (for example  USB ports) you cannot just replace a USB board, you have to replace the whole board.

     

    That being said, one of the few components that can go bad is the GPU (the Radeon 6970). Ask the Apple Store (I assume this is an actual Apple owned Apple Store) about the iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program - Apple Support

  • by NATMARK28,

    NATMARK28 NATMARK28 Jul 24, 2015 6:12 AM in response to rkaufmann87
    Level 1 (0 points)
    Jul 24, 2015 6:12 AM in response to rkaufmann87

    Thanks for explaining about the logic board. I have asked about the GPU/Video card and they have said that it is working fine! I will probably just buy an external monitor for the time being as the quote they have given me for replacing the board is too much. 

    Yes it was an official Apple store!