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Apple Computing Products:
macOS - Desktop Hardware
My iMac screen is messed up
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<blockquote data-quote="techiesteve" data-source="post: 1497709" data-attributes="member: 98520"><p>If the random vertical lines are thin 1 pixel wide, then it's more likely your LCD panel has failed. This was very common on 17" iMacs from 2006. If you can still view your desktop there is a quick check you can run. Note the thickness and position of the vertical lines, then drop the screen resolution. If the lines remain the same the LCD panel will require require replacement. If they increase in thickness it's more likely to be a logic board or video card fault, depending upon your model of iMac. Attaching an external display via an adapter is another way to determine what has failed.</p></blockquote><p></p>
[QUOTE="techiesteve, post: 1497709, member: 98520"] If the random vertical lines are thin 1 pixel wide, then it's more likely your LCD panel has failed. This was very common on 17" iMacs from 2006. If you can still view your desktop there is a quick check you can run. Note the thickness and position of the vertical lines, then drop the screen resolution. If the lines remain the same the LCD panel will require require replacement. If they increase in thickness it's more likely to be a logic board or video card fault, depending upon your model of iMac. Attaching an external display via an adapter is another way to determine what has failed. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
My iMac screen is messed up
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