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  1. #1

    hertz33's Avatar
    Member Since
    Jan 22, 2010
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    1
    Unhappy G5 won't start if warm
    I have a 1.6 GHz G5 iMac running 10.4.11. If I shut it down I can't reboot for about 20 minutes. Also, I have an external Lacie Hard drive and usually the iMac won't start up if the hard drive is connected. I have checked for new LaCie drivers. Any ideas?

    Thanks
    Hertz33

  2. #2

    hughvane's Avatar
    Member Since
    May 18, 2008
    Location
    Banks Peninsula, Canterbury
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    3,319
    Specs:
    MacMini 4.1, OS 10.11 and 10.6; Macbook Pro 8.2, OS 10.11, MacBook 4.1, OS 10.6.8
    Welcome to the Forums!

    My initial thought about the first issue is a faulty heat sensor/thermostat. Do you notice the fan operating at unusually high speed when you've been using your iMac for, say, 30 minutes or more?

    I've seen several (or more) posts on problems with LaCie external drives. I can't remember precisely which brand of drive is inside the enclosure, but I know some users have pulled the drive out and ditched the enclosure in favour of a different one. Do LaCie drives require drivers? I thought OS X simply recognised external devices natively - providing they're the right format.
    ABCDEFGHIJKLMNOPQRSTUVWXYZ
    Please post your Mac (or other) specs and MacOS version in your post, your profile or your signature. It helps us to help you better.

    I'm leaving now to go and find myself. If I should return before I get back, please ask me to wait.

  3. #3

    Collin Bl's Avatar
    Member Since
    Apr 07, 2009
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    Napier NZ
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    3,298
    Specs:
    27 iMac i5, MBP 13 & iMac 20, 2TB dual TC, AppleTV, iPh4S
    Just as an aside - had a G3 iMac that would do that and while inside replacing HD noticed Heat Sink had a broken clip so was hanging by one clip so effectively no heat sink. Might be worth a peak inside if all else fails.

  4. #4

    pigoo3's Avatar
    Member Since
    May 20, 2008
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    35,812
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    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by hertz33 View Post
    I have a 1.6 GHz G5 iMac running 10.4.11. If I shut it down I can't reboot for about 20 minutes. Also, I have an external Lacie Hard drive and usually the iMac won't start up if the hard drive is connected. I have checked for new LaCie drivers. Any ideas?

    Thanks
    Hertz33
    You could also remove the side panel from your G5...and see if everything is clogged up with dirt & fuzz. If so give it a good cleaning to restore proper air-flow.

    Check the cooling fins of the heat sinks...and all of the fans.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #5

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
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    Nambucca Heads Australia
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    22,400
    Specs:
    Imac 27", 3.3GHz, 512 flash storage, 16GB memory, macOS Sierra.
    Side panel on an iMac? Are you sure Nick?

  6. #6

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
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    35,812
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    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by harryb2448 View Post
    Side panel on an iMac? Are you sure Nick?
    Ughh...I gotta stop taking/smoking the drugs!!! I saw G5 in the title, and right away I was thinking G5 Towers!

    Kinda funny though if you think about it...someone with an iMac G5 out there searching for this mysterious side panel to remove so they can clean out the innards!

    Thanks for catching that mistake Harry!..."hertz33" please ignore my post above!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  7. #7

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    22,400
    Specs:
    Imac 27", 3.3GHz, 512 flash storage, 16GB memory, macOS Sierra.
    Got the original System Install discs? Pop in disc one and boot, then run Apple Hardware Test in the extended mode and see what is reported. And disconnect that Lacie as hughvane suggests.

    Does the Lacie connect to mains power and if so use a different power point.

  8. #8

    Mac SK's Avatar
    Member Since
    Oct 20, 2006
    Posts
    1,517
    Quote Originally Posted by pigoo3 View Post
    Ughh...I gotta stop taking/smoking the drugs!!! I saw G5 in the title, and right away I was thinking G5 Towers!

    Kinda funny though if you think about it...someone with an iMac G5 out there searching for this mysterious side panel to remove so they can clean out the innards!

    Thanks for catching that mistake Harry!..."hertz33" please ignore my post above!

    - Nick
    Something like this happened to me not so long ago..I took my wippen...But the innards of the Imac could be clogged up.

  9. #9

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
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    35,812
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by Mac SK View Post
    Something like this happened to me not so long ago..I took my wippen...But the innards of the Imac could be clogged up.
    Very true! I purchased a used iMac G5 recently...and it had a fair amount of "fuzz" in it!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

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