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  1. #1
    PoweeBook G4  vertical lines

    Member Since
    Jan 21, 2013
    Posts
    6
    PoweeBook G4 vertical lines
    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?

    Thanks

  2. #2
    PoweeBook G4  vertical lines
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,277
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    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.

  3. #3
    PoweeBook G4  vertical lines

    Member Since
    Jan 21, 2013
    Posts
    6
    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?

  4. #4
    PoweeBook G4  vertical lines
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,277
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    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.

  5. #5
    PoweeBook G4  vertical lines

    Member Since
    Apr 24, 2009
    Location
    UK
    Posts
    602
    Specs:
    MacBook Pro 15" 2.8 GHz
    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
    UK

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