Issues with iMac screen

Hello everyone! My name is Oswaldo, I am new to this forum, and I hope to find some help here.


So, I have an iMac A1224 (8,1/early 2008) which is having issues with the screen since a week ago. Everytime I press the power button it boots like this:


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And after a few minutes it just goes white, nothing else. But if I press the option button to select the hard drive it stays like this:


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I already opened it and I see no loose cables or anything. So, what could it be? Should I replace the screen or something else?

iMac

Posted on Jul 7, 2018 11:36 AM

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Posted on Jul 9, 2018 9:56 AM

I suspect that you are having an issue with the graphics processing unit based on the pattern being displayed. One easy way to help determine whether the issue is caused by the LCD or the GPU is to take a screenshot and email it to a computer with a working display. If you see the same issue in the screenshot when viewed on a different computer then the issue is probably with the GPU. If the image looks fine on another computer then the issue is probably with the LCD or less likely, the cable.


Good luck. I hope you are able to find a solution.

17 replies

Jul 8, 2018 10:30 AM in response to ojquirozr

You have a 10 year old computer. In computer years that's ancient. You would be better off in the long run buying a new iMac than trying to repair one that old. That model can't utilize the newer systems. The latest it can run is 10.11.6. We're up to 10.13.5 now and nearly ready for 10.14.


If you order one I'd get one with an SSD internal hard drive as it will much faster than a standard rotational HD. You can order additional memory from Crucial.com or macsales.com at about half what Apple charges to install. The 27" iMac is the only one that has user installable RAM capability.


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Issues with iMac screen

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