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Apple Computing Products:
macOS - Desktop Hardware
IMAC 27 Geek squad says bad logic board
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<blockquote data-quote="Lifeisabeach" data-source="post: 1635086" data-attributes="member: 38864"><p>Their analysis sounds on the money to me. We've seen this problem before from other members and those horizontal stripes are a sign of a failure of the graphics hardware. If you aren't under a warranty still, then the logic board will need to be replaced, and that's not cheap. There are some shops that specialize in repairing these logic boards also, but that won't be cheap either. Here's one that does it:</p><p><a href="https://www.powerbookmedic.com/mac-service.php" target="_blank">https://www.powerbookmedic.com/mac-service.php</a></p><p></p><p>EDIT: I do believe it could also be as simple as a loose or faulty cable connecting the display to the graphics card, which would be an easy and much less expensive fix. You won't really know though until someone opens that iMac up and checks it all out.</p></blockquote><p></p>
[QUOTE="Lifeisabeach, post: 1635086, member: 38864"] Their analysis sounds on the money to me. We've seen this problem before from other members and those horizontal stripes are a sign of a failure of the graphics hardware. If you aren't under a warranty still, then the logic board will need to be replaced, and that's not cheap. There are some shops that specialize in repairing these logic boards also, but that won't be cheap either. Here's one that does it: [url]https://www.powerbookmedic.com/mac-service.php[/url] EDIT: I do believe it could also be as simple as a loose or faulty cable connecting the display to the graphics card, which would be an easy and much less expensive fix. You won't really know though until someone opens that iMac up and checks it all out. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
IMAC 27 Geek squad says bad logic board
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