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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

PoweeBook G4 vertical lines


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alestes

 
Member Since: Jan 21, 2013
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Unfortunatelly, after 8 years, my Powerbook G4 1,67 17" started to show the infamous sign of vertical lines (only 1 for now).
I have the chance to get a replacement LCD for a moderate sum.
Is replacing the LCD enough to fix it or is it a motherboard problem?

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chscag

 
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I'm not sure I would spend any money on a machine that old, however, before replacing the LCD, attach an external monitor to see if you're getting the same indication. The problem may not be the LCD. If it turns out to be a defective GPU, it may not be economical to replace the logic board which you would have to do since the GPU is soldered to it.
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alestes

 
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Thanks.
I love this machine. It did its job for years, so if there is a chance to fix it (at a reasonable price) I would try.
So I will try to hook it to an external monitor. If the vertical line disappear on that I should be quite sure it's an LCD problem. Right?
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chscag

 
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Quote:
So I will try to hook it to an external monitor. If the vertical line disappear on that I should be quite sure it's an LCD problem. Right?
Yes, that would indicate your logic board and graphics are OK.
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techiesteve

 
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There is another quick test you can perform. Note the position and thickness of a vertical line. Lower the display resolution. If the line position moves and the line is thicker the line is on the video, therefore a gpu/logic board fault. It the line stays in the same position and at the same thickness when the resolution is lowered, the LCD will be defective.

If you attempt a repair look for a good used complete display clamshell. Replacing the LCD panel isn't the easiest task.

Steve Bell
Aylesbury, UK
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