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Old Jan 22, 2013, 02:03 PM   #1
im-loving-it
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Black lines bottom of screen - Help!

someone pelase help,

theres black vertical lines bottom of my screen when i switched on my macbook pro, im using snow leopard,

please someone help!!!!

reply quick if you can - everything works fine except for the lines please help
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Old Jan 24, 2013, 11:13 AM   #2
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Anyone?
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Old Jan 24, 2013, 11:18 AM   #3
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Post a screenshot.
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Old Jan 25, 2013, 07:01 AM   #4
im-loving-it
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heres the photo.....
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Old Jan 25, 2013, 08:16 AM   #5
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anyone?
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Old Jan 25, 2013, 08:21 AM   #6
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That's the diffuser peeling away from the LCD panel. You're seeing the backlight LEDs.

It's a hardware problem with the LCD panel. Might be repairable else hope it's under warranty.

Since it's a defect you might want to take it to an Apple Genius first.
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Old Jan 25, 2013, 08:31 AM   #7
im-loving-it
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i dont have applecare, i bought it from ebay a few weeks ago.

i just looked on youtube and a guy pressed SHIFT, CONTROL and EJECT buttons and the screen goes black then it goes back to normal screen without the lines. i tried it and now the lines have gone but everytime i switch on the laptop i see the lines and have to do the same again
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Old Jan 25, 2013, 08:38 AM   #8
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Quote:
Originally Posted by im-loving-it View Post
i dont have applecare, i bought it from ebay a few weeks ago.

i just looked on youtube and a guy pressed SHIFT, CONTROL and EJECT buttons and the screen goes black then it goes back to normal screen without the lines. i tried it and now the lines have gone but everytime i switch on the laptop i see the lines and have to do the same again
It's clearly the backlight, which normally is a hardware problem, what is odd though is you say it's gone when you press those keys, have you tried to reset the PRAM and SMC?
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Old Jan 25, 2013, 08:42 AM   #9
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Originally Posted by justperry View Post
It's clearly the backlight, which normally is a hardware problem, what is odd though is you say it's gone when you press those keys, have you tried to reset the PRAM and SMC?
no i havent tried that - i dont even know what that is.
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Old Jan 25, 2013, 08:58 AM   #10
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no i havent tried that - i dont even know what that is.
Resetting the System Management Controller - Support - Apple

About NVRAM and PRAM
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Old Jan 25, 2013, 11:32 AM   #11
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but what do i do? i saw the links but dont know what to do
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Old Jan 25, 2013, 09:08 PM   #12
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Quote:
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but what do i do? i saw the links but dont know what to do
How about reading them, if I explain to you here which I could do it will say exactly the same as in the links.

For the PRAM reset I can say here because it's the same all all Macs.
PRAM reset, Hold Command-Option-P-R all at once at startup, keep them pressed until after the 2th or 3rd startup sound, then release them, the mac will boot normally.

About the SMC reset it depends on the model, if you have a removable battery or not so read it yourself.
But for your convenience I pasted part of that page here.


Quote:
Resetting the System Management Controller (SMC)
Resetting the SMC on Mac portables with a battery you can remove.

Note: Learn about removing the battery on MacBook and MacBook Pro.
Shut down the computer.
Disconnect the MagSafe power adapter from the computer, if it's connected.
Remove the battery.
Press and hold the power button for 5 seconds.
Release the power button.
Reconnect the battery and MagSafe power adapter.
Press the power button to turn on the computer.



Resetting the SMC on portables with a battery you should not remove on your own.

Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
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Old Jan 26, 2013, 02:04 AM   #13
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According to this site, you can try the key combination of Shift+control+Eject to put the display to sleep, and on wake the issue should be gone.
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Old Jan 26, 2013, 02:51 AM   #14
Quad5Ny
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LED backlight driver board is dying, it looks like half the LED's in the strip are not lighting.

It's a inexpensive part, but you have to take apart half the laptop and the screen to get to it.
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Old Jan 26, 2013, 02:57 AM   #15
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According to this site, you can try the key combination of Shift+control+Eject to put the display to sleep, and on wake the issue should be gone.
Erm, the guy already did so.↓↓↓↓↓

Quote:
Originally Posted by im-loving-it View Post
i dont have applecare, i bought it from ebay a few weeks ago.

i just looked on youtube and a guy pressed SHIFT, CONTROL and EJECT buttons and the screen goes black then it goes back to normal screen without the lines. i tried it and now the lines have gone but everytime i switch on the laptop i see the lines and have to do the same again
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Old Jan 27, 2013, 10:19 AM   #16
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Can't fix a broken LED diffuser with software. It's a hardware problem, could be when the screen's off the diffuser moves but it's still not something fixable in software.
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