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Review this guide MacBook Air 13" Early 2015 Display Assembly Replacement. Follow the first steps to Step 3, then jump down to Step 19 to put aside the display connection to reach the screws underneath. Follow to Step 21 which points to the hinge screws that likely have loosened up (all six screws). If that didn’t solve it you’ll need to go back and follow the guide through as the lid screws are then loose. Stop at Step 26 after pulling off the display you’ll need to pulloff the black plastic clutch cover which covers the screws on the lid.
Use some clear fingernail polish around the hinge screws screw shaft just before fully tightening to help in preventing it to loosen again.
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I followed your instructions and indeed, the hinge screws were loose. However, even after fixing this, my display is still drooping. If it is tilted back by 30degrees, it will just keep falling back until hitting the stop. I noticed that when I use my fingers to rotate the hinge plates (the ones with 3 screw holes), there is very little resistance. It seems impossible to replace the hinges, since the display cable runs through them.... does this mean it would be necessary to replace the entire display?
@mckenziemardelli - The clutch mechanism within the hinge is worn-out. You'll need to replace the hinges. Flow the guide I posted as you need to fully remove the display to replace them. The cables are part of the hinge and they are feed through them so you'll be replacing them as well!
I followed the above guide and also used your tip to remove the black plastic clutch and tighten the screws below which worked a treat at firming up the screen hinge. Thanks for the tip!
@Chris Murphy - Happy it worked out! Don't forget to score the answer that helps me!
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