The larger of Apple's MacBook Air laptops featuring dual microphones and 802.11ac Wi-Fi connectivity.

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Closing lid doesn't put mac to sleep

I recently replaced the mac keybaord+trackpad assembly because the keyboard went haywire randomly.

After the replacement, the system doesn't sleep when lid is closed.

Tried resetting the SMC and PRAM.

I think its a sleep/close lid sensor issue?

Any help how i can locate the sensor, and make sure its the issue before ordering a part. I saw videos for MBP to put the system to sleep using magnet. i treid running a magnet around the screen and keyboard. nothing happend

Help appreciated.

Update (07/07/2018)

Just FYI, this unit had a very peculiar problem.

Remember the volcanic eruption in Bali couple of years ago? My friend (the real owner this laptop) was there when it happened.

Soon, after couple of days, the keyboard and trackpad goes crazy, random keypress, random trackpad movement, some keys not working, after the system is on for sometime.

When i opened the unit, i did find deposits of volcano ashes under the trackpad , and keyboard/trackpad connectors. and along the air vents. Luckily none the IO or main board. But the right side USB, doesn't work as well.

I am not sure if the sleep problem is because of that. I had to replace the whole upper body case assembly with keyboard and track pad to solve the keyboard/trackpad issue.

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Solución Elegida

The sensor is part of the I/O board

Block Image

To make sure I would first take a steel paper clip to locate the magnet in the lid, then carefully fold the lid down a piece so you can locate were the clip would be on the uppercase top (use a piece of tape to part the spot). This is the location you’ll need to slide the magnet across. I use this method as the better way as it also checks the magnet and its location in the lid. I would also make sure the I/O cable is fully seated. You may need a new cable as well.

Imagen MacBook Air 13" (Mid 2013-2017) I/O Board Cable


MacBook Air 13" (Mid 2013-2017) I/O Board Cable


Imagen MacBook Air 13" (Mid 2013-2017) I/O Board


MacBook Air 13" (Mid 2013-2017) I/O Board


Imagen MacBook Air 13" Mid 2013 I/O Board Cable


MacBook Air 13" Mid 2013 I/O Board Cable Replacement



15 minutes

Imagen MacBook Air 13" Mid 2013 I/O Board


MacBook Air 13" Mid 2013 I/O Board Replacement



25 - 45 minutes

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Woah! when i tried to locate the magnet on the screen, and taped that area, it falls between the headphone jack and usb . But when used the paperclip on the uppercase, the magnet is coming between USB and magsafe power connector.

Now i am confused! :|

Does it have to exactly on located on top of each other, i mean the magnetic on the screenlid and uppercase?

And is the hallsensor the magnet itself? I mean, if the hallsensor is gone, that means magnetic will be gone and vice versa? or does the hall sensor gets an input/signal from the magent.

Sorry, i am very new to mac hardware. Apologies if my questions are lame. lol


You reversed things ;-}

The paper clip on the display, fold down mark uppercase. Place magnet on uppercase on marked area. FYI: The sensor is between the headphone jack & USB port.

The MagSafe connector has a magnet which is what the paper clip found.

Check the I/O cable


Yup! that confirms it. either IO board or cable. Let me get to work to take this thing apart.

No magnet action on the upper case, where i got the mark. that mark does fall in between Audio and USB port.

Will check cable and the sensor and let you know.

Appreciate your help :)


UPDATE: Got it fixed. Tried changing the cable first. didn't work. Ultimately, changed the IO board. Works perfectly now. Thanks!


Thats great news!


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