Air 2017 - Backlight not work

[Indeeded]

Hey, I have macbook air 2017.
Yssterday Fully works, but today I turns on and display nothing.
I check display and works, but cant see, only if using flash Light on screen I see.
Its bad LCD or Motherboard?
If LCD, I can change, if not, where is a problem?
I need ur help guys.
Thank u very much.

 

[Indeeded]

And when I turn on and using iphone flash Light to the macbook LCD, I see the desktop. But keyboard too no lights, but works.

 

[Indeeded]

AND photos.
1. Display with bad backlight
2. When I use flashlight on lcd
3. When I use flashlight on apple logo

 

[macintoshmac]

1. Try to boot that system, and see what happens. When in the system, use your keyboard keys to increase brightness and see if that helps.
2. SMC/ NVRAM/ PRAM reset may help
3. Boot into Safe Mode and see if this helps.
4. Connect charger and see if that does the trick.

Best case: It is just totally minimized brightness, that should be fixable using the keyboard keys.
Worst case: Time to take a trip to the Store or buy a new one.

 

[Indeeded]

Hi, thank u for answer.
I tryed everything, brightness with key f2 - nothing, resetting smc - nothing.
Disconnected battery and charger and connect battery back and turns on - still dark display.
Nothing is visible on the display until I use a flashlight.
Idk its a bad display or motherboard fuse, but except display backlight and keyboard blacklight macbook fully works without problems.
Yesterday display works normal. Yesterday I read e-mails, MacBook was turned on for about 1hour. And today this problem

 

[MBAir2010]

see if the MacBook air still emits a screen by using a hdmi port to a monitor or
using a network screen sharing if there is another mac around.
this will let you know if there is a display signal from the macbook air is strong enough.

in my experience with macbook sometime that dang thing will work within hours.
and realize a cat, something pressed a code were the display or trackpad was locked.

sometimes zapping the PRAM twice helped many macbooks

 

[Indeeded]

Air is without connectors to external monitor. But MacBook works, when I flashlighting to lcd I can use MacBook normal. Okay I try pram, thank u.
And I reinstalled Mac OS to factory and without change.
I think is a hardware problem, but lcd flex cable? Lcd backlight k.o? Fuse on motherboard k.o? Idk guys I don't know what to do anymore Im scared if bad motherboard I love this laptop

 

[Indeeded]

Keyboard now backlight! First succes lol. But lcd still same

 

[Audit13]

Was the MacBook dropped or exposed to moisture?

 

[Indeeded]

No, MacBook is only on the table in my room.

 

[Audit13]

No, MacBook is only on the table in my room.

Then I'm not sure why the backlight would suddenly stop working. It may be time to have the logic examined by a person who can perform board-level repairs.

 

[Indeeded]

So its a board and no lcd, yeah?

 

[Audit13]

So its a board and no lcd, yeah?

Yes, I believe it has to do with the logic board. Did you examine the board for signs of damage or corrosion?

 

[Indeeded]

Looks in good condition.

 

[Audit13]

Looks in good condition.

I assume you looked at both sides? Did you try disconnecting and reconnecting the video cable?

 

[Indeeded]

Yes, I tryed disconnect and connect lcd cable.
Yes board looks good everywhere.
Im not at home now, but I can dissassembly and photo board from all sides. I sent photo when I comes home.
Thank u mate

 

[Indeeded]

do you want a photo from the other side as well?
Im thinking about buy second hand lcd and risk it if works, but Im scared is a faulty board and buy is money waster

 

[Indeeded]

Or is any way how to check if board is OK without going to service? Thank u mate

 

[Audit13]

I really think it has something to do with the logic board. I also noticed that one of the screws that hold the CPU fan in place is missing. Not sure if it has ever been disassembled.

 

[ptfuzi]

You can check the fuse and also can check the Pina if they have voltage..

But usually the issue in those is in the logic board not the display

 

[Indeeded]

No, dissassembly first time, I buyed this laptop new. I dissassembled screws today.
Oh, its bad. So sell laptop for spares and buy new? Or how much cost a repair in service? (United Kingdom)

 

[Audit13]

No, dissassembly first time, I buyed this laptop new. I dissassembled screws today.
Oh, its bad. So sell laptop for spares and buy new? Or how much cost a repair in service? (United Kingdom)

Find a repair person who can perform board-level repairs. If it is a backlight fuse on the board, it can be replaced.

 

[MBAir2010]

Make sure the battery is unplugged when disconnecting or connecting the display port attachment
this is how displays burn out.