Question about Apple PowerBook G4 Mac Notebook

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Logic board on mac. g4

Easy to do?

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Not too bad if you have the right tools (T8 torx screwdriver). See this website for logic board replacements and guides: http://www.ifixit.com/
An example of guide here: http://www.ifixit.com/Guide/Mac/PowerBook-G4-Ti-Mercury/Logic-Board/21/10/
Just select the right model


Posted on Apr 19, 2008

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The display in my 17inch g4 is flickering and locking up. what's going on?


Sounds like the logic board cord is loose to me. Get it checked out at the store.

Jan 13, 2011 | Apple PowerBook G4 Mac Notebook

1 Answer

My g4 laptop goes to the blue screen and pinwheel, but wont boot uo, i reset the pram, no good


Try cheap fix first of replacing hard drive and installing the OS. Then you gots to go for the spendy fix of new logic board.

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Try replacing the inverter board. If that don't help then the next step is the back light, but replacing it is a bi.ch, so most people just replace the whole screen. Also, check that the video cable wire is not crimped/cut and securely fastened onto the logic board.

May 17, 2010 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

1 Answer

My screen flickers and goes out sporadically.


Bad video graphics chip on logic board. Probably made by Nvidia. Repair logic board or replace the logic board.

Feb 17, 2010 | Apple 15" PowerBook G4 Aluminum 1.67 GHz...

1 Answer

While is was searching on the internet my iBook G4 locked up. I tried to reboot and it locked up again. I tried to reinstall OSX but during the install it locked up. I replaced the memory and hard drive...


Dude, if you have all the current updates for your OS and applications, then you got a logic board issue. Especially if you you keep seeing the spinning beach ball of death or the dreaded white screen of death. 
The iBook G4 is the poster child for logic board defects, because it has to do with the way the circuit boards were flowed.  Apple won't fix this for the iBook G4.  You got to do a big class action lawsuit like they did with the iBook G3 before they will replace the logic board.
Best bet is to sell this thing on e-bay as a non-working unit and get you a better laptop.

Oct 18, 2009 | Apple iBook G4 (Z0AZW13397068) PC Notebook

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IBook G4 boot sequence never shows the gray apple and the little spinning ring. It eventually goes from black screen to the boot condition. The iBook currently has no battery installed.


This laptop suffers from a known condition of the logic board and bad flow issues of the ic board chip where your left palm rests on the keyboard.  You gonna have ta get the logic reflowed or install a new logic board.  This process is a real pain in the as. because the computer is a real bit.h to open.  The Apple techs put like 20 million screws of varying lengths and shapes to really pi.s us service techs off when we try to service these things.

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2 Answers

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reinstall your system.  what system are you using?

Mar 09, 2009 | Apple iBook G4 Mac Notebook

1 Answer

Powerbook G4 LCD White


Well you either have one of 3 things wrong with the computer:

  1. the video connector on the logic board is broken or not making a full connection
  2. the video cable from the logic board to the LCD panel is damaged.
  3. the LCD panel is dead

Oct 15, 2008 | Apple PowerBook G4 Mac Notebook

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