New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus • Advice and insight from world-class Apple enthusiasts • Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

MacBook, black screen


Post Reply New Thread Subscribe

 
Thread Tools
KennyG1

 
Member Since: Nov 25, 2011
Posts: 8
KennyG1 is on a distinguished road

KennyG1 is offline
My macbook screen goes black from time to time and I have to close the lid a few times and then it's ok for a while. The screen is black but I can see the programs behind the „black shadow“ and even click on them and everything works normal. I was told at the mac shop it might be the graphic card or the cable to the screen. The former would be relatively easy and cheap to repair. The latter very expensive.

Does anyone else have this exact same problem and can tell me what the cause is?

Many thanks

KG

Hardware-Übersicht:

Modellname: MacBook
Modell-Identifizierung: MacBook4,1
Prozessortyp: Intel Core 2 Duo
Prozessorgeschwindigkeit: 2,4 GHz
Anzahl der Prozessoren: 1
Gesamtzahl der Kerne: 2
L2-Cache: 3 MB
Speicher: 4 GB
Busgeschwindigkeit: 800 MHz
Boot-ROM-Version: MB41.00C1.B00
SMC-Version (System): 1.31f1
Seriennummer (System):
Hardware-UUID: CFF2D15B-AA25-55BE-A50F-DFC4D17F4B08
Sensor für plötzliche Bewegung:
Status: Aktiviert
QUOTE Thanks
chscag

 
chscag's Avatar
 
Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 39,041
chscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond repute
Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

chscag is offline
Since this is an older MacBook, the culprit is likely a cable that provides power to the backlight. Over time, cables become brittle or the connectors get loose. That's why opening and closing the lid restores the backlight. Go to iFixit: The free repair manual and look up your model MacBook. You should be able to repair it yourself.
QUOTE Thanks
KennyG1

 
Member Since: Nov 25, 2011
Posts: 8
KennyG1 is on a distinguished road

KennyG1 is offline
Hi chscag,

Many thanks for your help.
QUOTE Thanks
KennyG1

 
Member Since: Nov 25, 2011
Posts: 8
KennyG1 is on a distinguished road

KennyG1 is offline
Hi,

Many thanks for your help and refering me "to iFixit: The free repair manual". As I said, my laptop screen often goes black when I adjust the screen. This indicates a cable problem as you said. However, recently I thought of adjusting the screen brightness. I don't know why I had never thought of this before but I have never needed to change the brightness!
By pressing the "less bright button" and the "more brightness button" also gets the screen back to normal. It sometimes takes a lot but it works. This, in my mind would indicate a problem in the graphic board, don't you think? I am told that the graphic board is part of the mother board and therefore I would have to change the complete motherboard.

Another thing is that when the screen goes black there is a slightly lighter spot in the middle of the screen where the screen shows though.

I think I may have to buy a new mac but would love to repair this one if it weren't too expensive and complicated.

Yours

KG
QUOTE Thanks
chscag

 
chscag's Avatar
 
Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 39,041
chscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond reputechscag has a reputation beyond repute
Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

chscag is offline
If it turns out to be a graphics problem, it would indeed be too expensive to repair. However, your problem sounds more like it's either with the backlight (as we previously discussed) or even one of the video cables.

Have you taken the machine apart yet?
QUOTE Thanks
KennyG1

 
Member Since: Nov 25, 2011
Posts: 8
KennyG1 is on a distinguished road

KennyG1 is offline
Hi again,

No, I haven't taken my Mac apart yet. For me that's a "major operation". I'm a little worried about breaking something or whatever. I also have no idea about what to look for and can only use the indications I spoke of when using the pc to guess what's wrong. I checked out "Mac. backlight" to see if I can get one online. Here I found more info about changing the screen, power cable and inverter for the backlight.

Backlight problem. Which inverter to buy? - MacBook Core 2 Duo - iFixit

Macbook 13.3" Screen,Inverter,Backlight Repair Part 4 - YouTube

I would now say at a guess that I need a new power cable and a new inverter. This seems quite "fiddly" to me and I'm not sure I can get the parts. Now I have to check out where I can buy the "right pieces" and hope that my guess is right. I live in Germany so getting pieces from the US could be difficult or more expensive than if I lived in the US.


Something I forgot and am adding: from time to time when I am online and change from one tab to the next the internet screen goes what I think you call "pixelly" i.e.squarish pixel boxes. I would attach a screen shot but its gone in a second.

Many thanks

KG

P.S. I am thinking about buying a new mac but I have been looking at all the macbooks and all seem to have serious problems!
QUOTE Thanks

Post Reply New Thread Subscribe


« RAM upgrade for Macbook Pro | How much BS am I going to have to go through to do this? »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
Help! Macbook Pro won't start! Black screen + no chime! Bashar Apple Notebooks 16 09-05-2013 12:48 PM
MacBook keeps going to black screen slowens890 Apple Notebooks 9 11-09-2012 02:50 AM
Black MacBook LCD Screen causes Kernel Panic talhah Apple Notebooks 1 05-30-2011 01:10 PM
Water 'incident' macbook screen black when battery in jadef Apple Notebooks 2 02-27-2009 08:59 AM
The "Mod your MacBook" thread kaidomac Apple Notebooks 50 07-11-2006 08:49 PM

All times are GMT -4. The time now is 10:41 PM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?