Question about Apple 15" PowerBook G4 Aluminum 1.67 GHz LCD Display (p/n 1002587) (661-3749 1002587) Mac Notebook

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My g4 power book screen is very dark

Change my g4 power book screen .but when i turned it on you can see it but it very dark. what do i go back and check for?

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This is door to a poor backlight meaning the backlight needs to be changed out. Going to cost like $125 for the part if you do not know how to do it then a tech will need to get involved so tack on your labor. I hope this helps as it did dozens of people with the same issue. please do leave ratings and feedback for your free answer today.

Posted on Apr 27, 2010

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Posted on Jan 02, 2017

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A dark screen means the inverter maybe faulty or the CCFL lamp at the bottom of the LCD is faulty.

If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

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Try putting in your OSX cd and holding "C" when it boots up. The problem could be with the board or it might be just a problem with the screen.

After it boots try seeing if you can get it to make sounds by pushing the volume buttons. If it makes the "click" noise then it is the screen that needs fixing.

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My G4 iBook screen goes dark shortly after I power-up, even If I hit the F2 key, the screen remains dark.


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Got the same problem with my ibook G4.
I have research on how to fix it, and found out that most model of G4 has the same problem.
I soon found out the main problem and the solution, it would require some skill in soldering and dis assembling the whole laptop.
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Okay. Try this
http://support.apple.com/kb/TA25861?viewlocale=en_US
If it does not help then it is possible that the Back light on the screen is faulty. If you just purchased the computer, then you should go back to the vendor and ask him to change or fix it .

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When I turn on my 17" power book g4 I hear the drive and chime and see a blip of screen light up from the lower right corner of the screen but goes black right away. I have no software at this time. I...


Do you have this machine plugged into AC power? If not, you may just have a depleted battery, which would fit these symptoms perfectly.
The problem is not software related, because with a missing or empty internal drive you would get a flashing question mark folder icon instead.
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My emac is on but the screen is dark and blank.


Hi there,

On the keyboad, above the numbers are the function keys. Depending on the keyboard being used, there is a key that changes the brightness of the screen. You can also go into your System Preferences under Displays and change it there.

Hope this helps
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This is nearly impossible to diagnose via the Web. It sounds like the logic board is at fault, but not necessarily.

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Hi sir/ Mm


look closely at the screen. You might have to change the lighting or shine a powerful light from the back of the screen, through the Apple logo. If you see a dim image, your problem is either with a bad "inverter" board, a bad "CCFL" light (the bulb that lights the screen), or with the logicboard itself. check back for more info if this is happening.

Jul 08, 2008 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

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