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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > damaged iBook display cable?

damaged iBook display cable?
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Join Date: Oct 2000
Location: Raleigh, NC, USA
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Jan 19, 2007, 01:14 PM
 
I just need some basic diagnosis help on our 800mhz G3 iBook. I used to be an Apple Service Technician, but that was 8 years ago.... Anyways, when you turn on the iBook it has several horizontal lines on the right side of the display. After about 30s it freezes.

My father dropped the laptop a couple years ago and slightly bent the hinge, so my first guess it that the hinge has been slowing wearing on the display cable. I took the laptop apart, and the bronze plastic stuff is worn all the way through. However, these cables are different from the old Powerbooks that I'm used to working on. The bronze plastic used to be a part of the electronics itself, but now it looks like it's used for insulation or protection. What is the purpose of the stuff? How can I definitively tell whether the cable itself is damaged or not?

Anyways, I reattached the cables and all electronics (but not the case), and powered it on. I can hear the laptop reach the login screen, however the display is completely blank now. I imagine that upon dissasembly the damage became complete. However, I tried to attach an external monitor and it gets no picture either. I can't remember... does the external display automatically come on, or do you have to set the resolution in the System Prefs first? Does the entire laptop have to be reassembled for the display to work (maybe there are grounds on the case)?

Thanks in advance!
Justin
     
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Join Date: May 2001
Location: Hampton Roads, VA
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Jan 19, 2007, 02:37 PM
 
This sounds more like the logic board issue the iBooks use to have. No picture from the external monitor means it's a problem with the video card, not with the LCD. The G3 iBooks had a soldered video card that had a problem staying soldered on.
     
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Jan 19, 2007, 03:26 PM
 
Do you recall where the video chipset is located? behind the hard drive?
     
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Jan 19, 2007, 03:42 PM
 
Under the left palm rest. Not sure exactly, though.
     
   
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