Any hardware gurus? Powerbook screen not working...

Discussion in 'Macintosh Computers' started by Macette, Aug 13, 2003.

  1. macrumors 6502

    Joined:
    Mar 5, 2002
    Location:
    Melbourne
    #1
    Well that's actually a bit of an overstatement: the problem is actually that about one in every ten times I turn on the Powerbook (500mhz G4), the screen doesn't come on. I can hear the startup chime and then it makes 'starting up' noises - but the screen is totally blank. No light, no image.

    It's a second-hand machine with a three month hardware warranty, and I just took it back because of this problem, they replaced the logic board and it tested okay, but now it's happening again.

    Bad RAM maybe? It's original Apple RAM, but you know...

    Any helpful suggestions? I'm slightly worried...
     
  2. macrumors demi-god

    szark

    Joined:
    May 14, 2002
    Location:
    Arid-Zone-A
    #2
    I'm just guessing, but it sounds like a possible damaged connection between the screen and motherboard.

    Have you tried an external monitor to see if it works consistently?
     
  3. thread starter macrumors 6502

    Joined:
    Mar 5, 2002
    Location:
    Melbourne
    #3
    Great idea

    That's a great idea - I'll definitely give that a shot, and let you know how I go.
     
  4. TEG
    macrumors 604

    TEG

    Joined:
    Jan 21, 2002
    Location:
    Langley, Washington
    #4
    I had a similar proble, and they ended up having to replace the screan and the Logic board.

    TEG
     
  5. Moderator emeritus

    Joined:
    Jun 25, 2002
    Location:
    Gone but not forgotten.
    #5
    Have you tried turning it upside down and shaking it? :D

    I would say that it's probably a loose connection and definitely not RAM.

    I had inconsistent problems with a machine after transporting it from the computer store. Lifting it an inch off the desk and dropping it re-seated the chips and fixed the problem. I don't think that will work for you, though.
     
  6. thread starter macrumors 6502

    Joined:
    Mar 5, 2002
    Location:
    Melbourne
    #6
    You know what? I actually did, and it seems to have worked somewhat - not a problem since. Of course, it's a laptop, so it's not really good enough for it to be shaky when I move it around, but it's something. Not such a stupid tip...
     
  7. macrumors 603

    shadowfax

    Joined:
    Sep 6, 2002
    Location:
    Houston, TX
    #7
    that really is sage advice. it works for small children, at least some of the time, and they are much more complicated than powerbooks....
     
  8. macrumors 6502a

    simX

    Joined:
    May 28, 2002
    Location:
    Bay Area, CA
    #8
    Haha! Let's hope you never become a parent, shadowfax. ;)
     
  9. Moderator emeritus

    Joined:
    Jun 25, 2002
    Location:
    Gone but not forgotten.
    #9
    Well, I was referring to this other laptop device: http://www.etch-a-sketch.com/

    That's the only method to re-boot it.

    I hope things work out. :)
     
  10. thread starter macrumors 6502

    Joined:
    Mar 5, 2002
    Location:
    Melbourne
    #10
    Well here's the cool thing:

    The reseller who sold it to me just rang and said since it's causing me trouble, he'll swap it (actually he'll even give me some money back on it) for a G4 667 with Combo drive and a 40GB HD - an ex-demo model from Apple which will be eligible for AppleCare! How cool is that? So I'm getting a refund, an upgrade, and Applecare. My current model is just a G4 500 with DVD drive and 20GB drive.

    So the problem is now officially somebody else's!
     
  11. Moderator emeritus

    Joined:
    Jun 25, 2002
    Location:
    Gone but not forgotten.
    #11
    That is excellent! I'm happy for you and hope that you don't have problems with the other machine.
     

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