Easy Search [ ? ]
 
* Login   * Register * FAQ    * Search

All times are UTC - 6 hours [ DST ]




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 2 posts ] 
Author Message
 Post subject: Black screen with fan noise. No chime. Logic Board?
PostPosted: Mon Jan 11, 2010 6:44 pm 
Offline

Joined: Sun Jul 25, 2004 4:06 pm
Posts: 1
A friend brought me her 12" 1.33 GHz G4 iBook. It had been working fine. Then it died. When you press the power button the fan goes on after a few seconds but the screen remains black. I reset everything, but no change. Is this a shot logic board or video card (if there is one separate from the logic board)?

Also, I have a 12" 1.2 GHz G4 iBook that I am no longer using. It works but the screen has a bluish cast to it. What could the problem be with it? Again- logic board or video card (again, if there is one) or LCD? Is i possible to replace the logic board from a 1.33GHz with the one from a 1.2 GHz?


Top
 Profile  
 
 Post subject: Re: Black screen with fan noise. No chime. Logic Board?
PostPosted: Tue Jan 12, 2010 11:57 am 
Offline
Site Admin

Joined: Thu Feb 27, 2003 6:35 am
Posts: 977
The first one definitely sounds like the logic board. The video is just a chip on the same board.

Bluish tint can be caused by a few things. First is software. You may want to check your video calibration settings or you may want to create a new user account and see if its still bluish on that account with all fresh settings.

After that, it it probably either the LCD or most likely the display cable. If it gets better or worse depending on the angle of the screen that points towards the cable.

Otherwise it is the logic board. I'll probably take it somewhere to be diagnosed on the 2nd one. Probably too expensive sending parts back and forth just to test.


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 2 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group