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.

Bad video card?


Post Reply New Thread Subscribe

 
Thread Tools
oreoremix42

 
Member Since: Aug 03, 2007
Posts: 36
oreoremix42 is on a distinguished road

oreoremix42 is offline
I have a late model 2008 MBP and it has for a long time had a flickering screen. Would a bad video card cause this issue? Sometimes the whole screen flickers, sometimes its a portion. And most of the time its when the computer is under load. I put the computer for better performance and it happened less. Then turned back to better battery life for school since I can't plug it in and it happens frequently again.

Any thoughts?

Thanks, Kyle
QUOTE Thanks
6string

 
Member Since: Sep 09, 2009
Location: Down Under :D
Posts: 5,484
6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold
Mac Specs: Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)

6string is offline
Sounds like it. Could be related to the faulty Nvidea chips which Apple has extended the warranty for. See MacBook Pro: Distorted video or no video issues

Just to be sure, have you tried with a an external monitor to rule out the inverter?
If the display is fine with an external monitor, than it's not the chip.
QUOTE Thanks
oreoremix42

 
Member Since: Aug 03, 2007
Posts: 36
oreoremix42 is on a distinguished road

oreoremix42 is offline
Ihave run the computer into a tv without an issue if that counts?
QUOTE Thanks
6string

 
Member Since: Sep 09, 2009
Location: Down Under :D
Posts: 5,484
6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold6string is a splendid one to behold
Mac Specs: Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)

6string is offline
If it's not happening with an external display, it suggests that it's not the graphics chip, however, since it is happening under load, it suggests that it is. (Sounds bizarre I know!)
Since it is the model in which there were faulty cards, I would contact Apple to book it in to have it tested.
QUOTE Thanks
Matrix

 
Member Since: Sep 13, 2007
Posts: 66
Matrix is on a distinguished road

Matrix is offline
It depends what you mean by "flicker". The actual graphics data, or just the backlight? Does your LCD ever have a reddish hue?
QUOTE Thanks
oreoremix42

 
Member Since: Aug 03, 2007
Posts: 36
oreoremix42 is on a distinguished road

oreoremix42 is offline
When I say flicker the screen turns off completely with a split second. Actually happens so fast first few times I saw it, it seemed like I just blinked and that was issue. But kept happening so has made me nervous. Doesn't effect performance but seems weird and I want it right. I already had it in the a tech place to get looked at and it couldn't find anything.
QUOTE Thanks
Matrix

 
Member Since: Sep 13, 2007
Posts: 66
Matrix is on a distinguished road

Matrix is offline
LCD's have two parts - the actual LCD part that displays the images, and a bright backlight that makes it visible. The backlight is either CCFL or LED depending on your model.

The first thing to check would be if it's the backlight. Which might be difficult given how fast the duration is. You'd need to have a very bright flashlight handy, and see if the entire LCD goes blank, or just the backlight. The former will show a dark LCD, but you will still see things on your screen, while the latter will be a totally blank screen - identical to if you shined the light on the screen while the power was off.

I'm not sure how this will help you, but at least it narrows down what might be failing.
QUOTE Thanks

Post Reply New Thread Subscribe


« slow connection speed | Question wiping Macbook Pro (not what you think) »
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

All times are GMT -4. The time now is 05:41 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?