My mid 2013 macbook Air model stays stable in 90 degs, 120 degs all angles when it is grounded , but on extending the computer from the base, the screen falls back. IS it normal???
macbook Air model stays stable in 90 degs, 120 degs all angles when it is grounded (laying FLAT on a table) ,
It is normal.....your Air is fine
Youre lifing your Air up and claiming that the monitor will flop open at or past 90 degrees. Normal.
Learn what you can do if you experience one or more of these issues with the hinges on your MacBook Air.
- Unable to close lid completely.
- Broken or cracked plastic near one or both of the hinges.
- More than one inch (2.54cm) of free play while opening or closing the lid.
- Lid falls freely into closed position from a 30-degree open position. (From a closed position, open the lid approximately 30 degrees and let go.)
END from Apple.com
Due to the thin nature of the LCD backlit LED monitor on the Air, you would NOT WANT a very tight hinge.
Why? Excessive hinge resistance would cause the screen to BOW (and possibly crack), especially on a longer fulcrum from the hinge in the case of the 13" screen...... Ergo it is designed logically to be “looser than” a traditional macbook Pro's hinges for a very good reason.
A device with torque between two parts on a common axis.
A friction hinge is also commonly known as a:
Constant Torque Hinge, Position Hinge, Clutch, Torque Hinge, or Detent Hinge.