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  1. #1

    Member Since
    May 05, 2008
    Mac dying!!! needs YOUR attention!
    hi all

    ill get to the point, ive got a g3 powermac? clear case with perspex handles. I wanted it for my bf to use, he bought me a lovely new imac but i want to try and revive my old mac for him.
    Basically, it will run for a few mins then it will cut out and you can't switch it back on for about half hour afterwards.
    I'm pretty sure its a hard drive failure but would like some conformation. Also if it is the hard drive can i just replace it with a new HD? the model of the HD is a seagate barracuda, ive looked on ebay and they seem reasonably cheap, so would be willing to replace it if thats what the problem is.
    i have completely wiped the disk and there is no os operating on it. I know everything is working as ive literally just tried to reinstall tiger and it switched itself off, so it must be a hardware problem.

    Any help would be great,



  2. #2

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Lake Mary, Florida
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    The hard drive is a common point of failure. You can run the Apple Hardware Test to check it. If you choose to replace it, bear in mind that you can use any PATA hard disk. You do not need to purchase the exact same make and model, just make sure that it uses a traditional IDE/Parallel ATA connector instead of the more modern SATA style.

    Also note that many times when a machine shuts itself off and then will only turn on after a period of time, it's usually due to a thermal issue (like a bad fan). Have you confirmed that the fans are all functional?
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

  3. #3

    Alexis's Avatar
    Member Since
    Apr 20, 2006
    Al iMac 20" 2.4Ghz Intel Core 2 Duo
    Could be a power supply problem or an intermittant capacitor fault on the motherboard.

    When ancient G3 iMacs start to die, there's usually little point trying to fix them.

  4. #4

    Member Since
    May 05, 2008
    all the fans are working, the insides were cleaned out recently (by someone who knows what they are doing!) there is no grinding noise like you get on a pc when the hard disk fails.
    im not a computer hardware geek, so the 2nd post makes no sense! the light on the motherboard does light up when it is running.
    im at a loss, i know its an ancient mac and i can prolly go on ebay and pick one up for 40 but would ultimately like to fix it. Before this started happening it was dead reliable.
    it has had a new power lead recently, was one of the first things i replaced.


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