Powerbook G4: Screen Issues - red pixelated, and screen going out?

Discussion in 'PowerPC Macs' started by crdean1, Jul 8, 2008.

  1. crdean1 macrumors 6502a

    crdean1

    Joined:
    Feb 14, 2005
    Location:
    Texas
    #1
    Thanks in advance for any insight you might provide.

    I have a G4 Powerbook 1.67 that I don't take anywhere. It just sits on an iCurve as a home computer. Never been dropped, damaged, looks as good as new.

    That said, the screen sometimes gives me these red moving pixels which distorts the screen image a bit (pic attached). And lately the screen has been going out at times with lines across the screen, then intermittent blackouts. Any suggestions? Applecare expired in Feb.

    Thanks!
     

    Attached Files:

  2. techound1 macrumors 68000

    techound1

    Joined:
    Mar 3, 2006
    #2
    Intermittent and lines on a pb says pinched cable to me, but that means the screen should keep its backlight even without a picture (and it sounds like it just goes black?). Total loss of both picture and backlight has me thinking video card.

    Since it's free (but a longshot), you can try resetting the PMU as it does control backlighting.
     
  3. crdean1 thread starter macrumors 6502a

    crdean1

    Joined:
    Feb 14, 2005
    Location:
    Texas
    #3
    Thanks, Techound1, I'll try that. Like you said, it's free

    Edit: Interesting, the picture I posted was an attempt to capture the red pixelation across the top of my screen. It appears, now that I am looking at it via my 'BlackBook', that the pixelation did not translate to the picture posted. Hmmmm....
     
  4. techound1 macrumors 68000

    techound1

    Joined:
    Mar 3, 2006
    #4
    That's good - I was worried I was loosing my mind not seeing it. :eek::)

    Oh, and if it doesn't show up on a screen capture, that means it's probably a cable, rather than a video card.
     
  5. crdean1 thread starter macrumors 6502a

    crdean1

    Joined:
    Feb 14, 2005
    Location:
    Texas
  6. techound1 macrumors 68000

    techound1

    Joined:
    Mar 3, 2006
    #6
    Here's to hoping a little padding will help! If you need the official manual, PM me your email address and screen size and I'll send one over.
     

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