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Hi, I had given my father a 27" imac for his birthday a few years ago. After his hard drive failed and was replaced, a few weeks later he started on a hard start up to get red banding on the display.
I have attached a picture below. Any thoughts? Does anyone think I need to open up and re-set the ribbons for any drivers or replace the LED driver?
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Please give us the last four figures of your serial number so I can check it out for this:
iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program
Apple has determined that some AMD Radeon HD 6970M video cards used in 27-inch iMac computers with 3.1GHz quad-core Intel Core i5 or 3.4GHz quad-core Intel Core i7 processors may fail, causing the computer’s display to appear distorted, white or blue with vertical lines, or to turn black. iMac computers with affected video cards were sold between May 2011 and October 2012.
If your iMac has an AMD Radeon HD 6970M video card and is exhibiting any of the issues described above, choose one of the following options to arrange to have your iMac evaluated:
Before you go in for service, please back up your data. Learn more about backup options.
If the iMac (27-inch) meets these requirements, Apple will replace the video card free of charge for four years after the first retail sale of the computer.
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Wow, if this is it, would be awesome. Will post when I get home and then reach out to Apple.
Serial # is DHJQ for the last four letters...
¥our serial number is in the recall group. http://9to5mac.com/2013/08/16/apple-open...
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mmm... I'm thinking the internal display is gone here.
If you can plug in an external display to see if it shows a clean image? If it does then it's either the LVDS cable is damaged or the LCD it's self. If on the other hand the external is unable to show a clean image, then it's the graphics card.
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