Is my iMac G4 toast?

Discussion in 'PowerPC Macs' started by sikkinixx, Sep 25, 2013.

  1. sikkinixx macrumors 68020

    sikkinixx

    Joined:
    Jul 10, 2005
    Location:
    Rocketing through the sky!
    #1
    So a few months ago I fired up my iMac and a bunch of computer gibberish appeared in bands on the top of the screen. I rebooted and it just didn't start up. Fans were on but nothing else.

    Anyway, went on vacation, came back and today decided to see whats up. Fired it up and got the familiar chime and Apple logo pops up. ALL IS FINE! YAY!.... or not, then this comes up. I turned it off, then tried to fire it back up and fans spin but nothing happens.

    ?
     

    Attached Files:

  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    That may be a hardware problem. I'd first suggest reinstalling Mac OS X. If that doesn't fix it, the GPU may be fried.
     
  3. sikkinixx, Sep 25, 2013
    Last edited: Sep 25, 2013

    sikkinixx thread starter macrumors 68020

    sikkinixx

    Joined:
    Jul 10, 2005
    Location:
    Rocketing through the sky!
    #3
    I'll give it a go and reinstall. I thought it might be a thermal issue but it is only on for a few seconds before it craps out so I doubt it has time to get hot enough to cut out.


    edit: So I replaced the thermal paste and dusted out the inside, made there everything was okay inside. No boot. Tried booting into Open Firmware (cmd+option+o+f) and it worked! So maybe hard drive is toast? Which sucks even more as those damn IDE drives are expensive.

    edit2: annnnnnnd nm. It froze up again and won't reboot.
     
  4. havokalien macrumors 6502a

    havokalien

    Joined:
    Apr 27, 2006
    Location:
    Kelso, Wa
    #4
    Bad caps

    Capacitors, check power supply inside and on motherboard for capacitors. Due to age and use it's about time for the G4's to fall victim to the problem that the vintage Mac community is experiencing.
     
  5. sikkinixx thread starter macrumors 68020

    sikkinixx

    Joined:
    Jul 10, 2005
    Location:
    Rocketing through the sky!
    #5
    I'll rip it open again tomorrow and take a look. It might be going to the big recycling station in the sky, or a freebie on Craigslist.
     
  6. SimonUK5 macrumors 6502

    Joined:
    Nov 26, 2010
    #6
    Is it a 17''? Just put a macmini in the bottom of it, if you have basic knowledge of soldering, then its literally a 2 hour job. Maybe 3.

    I'm finishing up one i did for a friend and i'll release the PDF of instructions i've been using.
     
  7. gooser macrumors 6502

    Joined:
    Jul 4, 2013
    #7
    please do.
     
  8. SimonUK5 macrumors 6502

    Joined:
    Nov 26, 2010
    #8
    Its nothing that isn't already on the internet, but just putting it into a more organised fashion.
     
  9. Aameiel macrumors regular

    Aameiel

    Joined:
    Jan 22, 2011
    Location:
    Cape Coral, FL

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