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Apple Computing Products:
macOS - Notebook Hardware
MacBook Pro Screen Problem
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<blockquote data-quote="cwa107" data-source="post: 623343" data-attributes="member: 24098"><p>So, the machine still freezes, but the display doesn't corrupt (externally). It appears to only happen once the machine has fully warmed up and in normal use. A reboot will cure it sometimes, but many times it needs to be left off for awhile. </p><p></p><p>All of this points to an overheating problem (at least in my mind). If it were the processor overheating, it would turn off. If it were fan related (or one of the two fans not working), AHT would have detected it. The graphic anomalies and complete freeze seem to be related to the graphics subsystems (maybe not necessarily the video card, but the inverter, flex cable or components near or around the GPU). Either way, it's soldered to the system board, so a repair would include replacing it. </p><p></p><p>Before you write it off though, I would try doing a full backup to an external (with SuperDuper or CarbonCopyCloner) and then reinstall OS X clean. That would eliminate the possibility of a software issue (not that I can imagine this to be one, by any stretch of the imagination).</p></blockquote><p></p>
[QUOTE="cwa107, post: 623343, member: 24098"] So, the machine still freezes, but the display doesn't corrupt (externally). It appears to only happen once the machine has fully warmed up and in normal use. A reboot will cure it sometimes, but many times it needs to be left off for awhile. All of this points to an overheating problem (at least in my mind). If it were the processor overheating, it would turn off. If it were fan related (or one of the two fans not working), AHT would have detected it. The graphic anomalies and complete freeze seem to be related to the graphics subsystems (maybe not necessarily the video card, but the inverter, flex cable or components near or around the GPU). Either way, it's soldered to the system board, so a repair would include replacing it. Before you write it off though, I would try doing a full backup to an external (with SuperDuper or CarbonCopyCloner) and then reinstall OS X clean. That would eliminate the possibility of a software issue (not that I can imagine this to be one, by any stretch of the imagination). [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
MacBook Pro Screen Problem
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