Screen has no light, but under flashlight i see that it works

Question

selnomeria Author

Level 1

8 points

Screen has no light, but under flashlight i see that it works

Suddenly screen backlight has gone and the screen is completely black.

but while i manually light flashlight on a screen,somehow i can see that screen shows everthing correctly.

just it has no light completely.

what is wrong? i've tried all types of keyboard resets,battery removal and etc.. no success...

i've heard that may be HARDWARE (WLED or backlight fuse) problem. is that true?

if so, can anyone screenshot a good resolution images, to see where is located WLED DRIVER or BACKLIGHT FUSE (i have macbook pro, 2013), and also, where i can buy them (i.e. ebay links to that parts)?

thanks in advance

MacBook Pro, null

Posted on Jul 7, 2016 2:25 PM

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Answer 1

macjack

Level 10

111,242 points

Jul 9, 2016 2:06 AM in response to selnomeria

You've already diagnosed it yourself. It sounds like a backlight inverter to me too.

Bring it to any Apple Store for a free evaluation.

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Answer 2

Jul 7, 2016 6:45 PM in response to selnomeria

You can reference ifixit.com for your paticular Mac https://www.ifixit.com/

or take it in for assessment

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test

Genius reservation http://www.apple.com/retail/geniusbar/

on-line https://getsupport.apple.com/GetproductgroupList.action

check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

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Answer 3

selnomeria Author

Level 1

8 points

Jul 8, 2016 12:34 AM in response to selnomeria

here are images of WLED and BACKLIGHT FUSE locations -

http://forums.macrumors.com/attachments/mbp15_backlight_fuse-jpeg.409479/

https://d3nevzfk7ii3be.cloudfront.net/igi/xetIgiVX4nuxgftH

https://d3nevzfk7ii3be.cloudfront.net/igi/GNQikjrRniiHiKE2

other answers:

https://www.ifixit.com/Answers/View/139751/Inverter+Cable+%26+Inverter+Board+Loc ation

https://www.ifixit.com/Answers/View/179933/My+MacBook+Pro+turns+on%2C+but+has+a+ black+screen.

https://discussions.apple.com/thread/4025046?start=30

https://discussions.apple.com/thread/7608001

https://www.ifixit.com/Answers/View/1650/iBook+screen+switches+off-goes+black+wh en+opened+more+than+45+degrees

https://www.ifixit.com/Answers/View/185233/screen+backlight+not+working+on+MacBo ok+Pro

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Answer 4

macjack

Level 10

111,242 points

Jul 8, 2016 6:34 AM in response to selnomeria

It's not possible to pin-point the problem without tearing down your Mac. That procedure is long and complicated, unless you are very good with hardware. As I've said, best to take it to an Apple store for a free evaluation. Then you can decide how to proceed.

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Answer 5

Jul 9, 2016 2:05 AM in response to selnomeria

selnomeria wrote:

backlight has gone and the screen is completely black.

but while i manually light flashlight on a screen,somehow i can see that screen shows everthing correctly. just it has no light

i've heard that may be HARDWARE (WLED or backlight fuse) problem. is that true?

Definitely a hardware issue: GPU, LED/LCD, cable or cable connection.

Unfortunately you do not say which specific Mac (model/year) you have.

Try hooking up an external monitor and run the AHT http://support.apple.com/kb/HT1509 Not definitive by any means, but may kick out an error code.

Unfortunately the 2010 extension program has ended: MacBook Pro (15-inch, Mid 2010) intermittent black screen or loss of video Quality Program has ended - Apple Support

However the 2011, 2012, 2013 had been extended for select machines: https://www.apple.com/support/macbookpro-videoissues/

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