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Apple Computing Products:
macOS - Notebook Hardware
MacBook display randomly blacks out (backlight problem)
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<blockquote data-quote="Stalak" data-source="post: 1405959" data-attributes="member: 253045"><p><strong>Backlight Problem - overtightened screw/s</strong></p><p></p><p>mbmsv describes exactly the problem I was having. My backlight problem was not related to movement of the screen. It was somehow related to load/heat, specifically if I had a few browser tabs open and then started watching Netflix. Then I would lose the backlight and only get it back briefly by reducing and then increasing screen brightness, or by shutting down Netflix. This is what I did:</p><p></p><p>I removed both of the inside (closest to the hinge) screws in the rear end of the unit. I think that over tightening these screws is causing this particular problem. I have a feeling that it is the left side (right side if facing the machine) specifically but have been too relieved to figure out which one for sure as yet. I will experiment later to determine wich screw.</p><p></p><p>The only other things I also did was to reset the NVRAM by holding down the power button for 5 secs with no power. I also did not replace the battery, which is dead anyway. I doubt very much that either of those had any effect.</p></blockquote><p></p>
[QUOTE="Stalak, post: 1405959, member: 253045"] [b]Backlight Problem - overtightened screw/s[/b] mbmsv describes exactly the problem I was having. My backlight problem was not related to movement of the screen. It was somehow related to load/heat, specifically if I had a few browser tabs open and then started watching Netflix. Then I would lose the backlight and only get it back briefly by reducing and then increasing screen brightness, or by shutting down Netflix. This is what I did: I removed both of the inside (closest to the hinge) screws in the rear end of the unit. I think that over tightening these screws is causing this particular problem. I have a feeling that it is the left side (right side if facing the machine) specifically but have been too relieved to figure out which one for sure as yet. I will experiment later to determine wich screw. The only other things I also did was to reset the NVRAM by holding down the power button for 5 secs with no power. I also did not replace the battery, which is dead anyway. I doubt very much that either of those had any effect. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
MacBook display randomly blacks out (backlight problem)
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