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Power Macintosh G3

2082 Views 20 Replies Latest reply: Oct 16, 2012 8:28 PM by Jacumba RSS
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Jacumba Level 4 Level 4 (2,325 points)
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Oct 4, 2012 10:09 AM

    I picked this computer up and it wouldn't start. I read online that there is a button on the motherboard I believe a cuda, I pressed it and the computer started. I could hear a musical tone come from the front speaker so seem to think it may have recognized the OS. But the screen remained black.

   My question is does it require a Mac monitor? I plugged it into one of my monitors from my windows computers. I'd love to get this old computer running my first one was a Mac and haven't seen one in years and would appreciate and help you could give me.

  It does have a video card in it a Rage and a 400 Mhz cpu with 384 Ram

  • BDAqua Level 10 Level 10 (114,715 points)
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    Oct 4, 2012 11:29 AM (in response to Jacumba)

    The tone is a good sign, but which exact G3 is it?

     

    If you don't know the model, find the Serial# & use it on one of these sites, but don't post the Serial# here...

     

    http://www.chipmunk.nl/klantenservice/applemodel.html

     

    http://www.appleserialnumberinfo.com/Desktop/index.php

     

    How to find the serial number of your Apple hardware product...

     

    http://support.apple.com/kb/HT1349

  • Allan Jones Level 7 Level 7 (29,575 points)
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    Oct 4, 2012 11:40 AM (in response to Jacumba)

    If the computer has been sitting a long time not connected to a power source, it could be a cheap fix.

     

    There is an internal backup battery on the logic board, sometimes called the "PRAM" battery, that holds settings when the computer is unplugged for moving or maintenance. Unfortunately, this little battery cannot continue to hold settings for months or years. In some Mac models, a dead PRAM battery can allow the computer to make normal startup noises but not show anything on the display.

     

    First action, assuming you have a Mac keyboard, is to cold-start the computer while holding the keys command option p r. Keep holding until you hear a total of three startup chimes, then let go. See if you have video. If so, replacing the battery should be all you need to start learning about the G3.

     

    The button you mention is on the logic board and can do the same as the keyboard reset. However, give the button one short push, NOT the 20 seconds recommended for the previous G3 model.

     

    Logic board diagram here;

     

    http://macgurus.com/products/motherboards/mbppcg3bw.php

     

    I get batteries here:

     

    http://eshop.macsales.com/item/NewerTech/BAA36VPRAM/

     

    You can get the battery at Radio Shack (Tandy) as part number 23-026 but is will cost 4-5X as much.

    iMac 27-in; Mid 2010 2.93G i7 Quad, Mac OS X (10.6.8), 4GB RAM; ATI5750 1G VRAM
  • Allan Jones Level 7 Level 7 (29,575 points)
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    Oct 4, 2012 11:42 AM (in response to BDAqua)

      It does have a video card in it a Rage and a 400 Mhz cpu with 384 Ram

    BD, that should make it Blue & White. The fastest Beige G3s were 333mHz and seldom shipped with a PCI video card.

  • MichelPM Level 5 Level 5 (7,125 points)
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    Oct 4, 2012 11:50 AM (in response to Jacumba)

    You don't need an Apple specific monitor, but you need a monitor that has and/or uses a VGA connection.

  • MichelPM Level 5 Level 5 (7,125 points)
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    Oct 4, 2012 11:58 AM (in response to Allan Jones)

    Allan,

    There are 4 G3 Blue & White models the use a 400 MHz CPU.

    All of them have a VGA as a connection for a VGA monitor.

    One model uses Apple's Display Connector and the other uses DVI.

  • MichelPM Level 5 Level 5 (7,125 points)
    Currently Being Moderated
    Oct 12, 2012 9:01 AM (in response to Jacumba)

    No such thing a monitors specific to Windows. All monitors are cross-platform.

    They either need VGA or DVI connectors to be compatible across computer platforms.

     

    You can't just use any ole' video card in a Mac.

    It has to be a video card specifically for the Mac and is compatible with the model Mac you have.

    You need a PCI video card that is a Mac edition PCI video card or a PC Flashed PCI video card that is known to work in Macs, too!

     

    Before doing anything, go through the Mac and makes sure all of the RAM modules are seated down properly. Make sure the video card is seated down in its slot properly. Make sure any other cards that are in there are seated down properly.

    It's possible the video card is either dislodge or bad.

    If it's chiming, can you hear the hard drive spinning up?

    The hard drive might be bad.

    If you install another drive, you will need to to format it for Mac.You need either the original install discs or retail OS X discs to run the OS X Disk Utility to format the drives before trying to install OS X.

    I did some research and you will need both OS 9 ( OS 9.1 or 9.2) and OS X  10.4 Tiger.

    If you know someone who is an older Mac user to see if they have copies of these to use for installation.

    They are very old, now if you find the original retail disc versions of these, they are going to be expensive to buy.

    Probably more expensive for the OS copies than the Mac is worth, at this point.

    The reason you need OS 9 is that you must perform a firmware update to the Mac's CPU before installing OS X.

    The firmware updater can only be run in OS 9 and NOT OS X.

    Any version of OS X will not install unless this firmware update is applied.

    Note, this Mac may have has the firmware updater already applied. You won't know this until you can get  OS 9 installed on this Mac.

    It's not going to be easy getting this Mac to run without the original system disks and without knowing what is good or bad with this Mac.

  • MichelPM Level 5 Level 5 (7,125 points)
    Currently Being Moderated
    Oct 12, 2012 9:07 AM (in response to Jacumba)

    If you have plans to upgrade this Mac to get it to a usable condition, I stumbled upon a site that will point you in the right directions.

     

    http://www.wikihow.com/Upgrade-Your-Power-Mac-G3-Blue-and-White

  • MichelPM Level 5 Level 5 (7,125 points)
    Currently Being Moderated
    Oct 12, 2012 2:45 PM (in response to Jacumba)

    Okay, you gave me some more useful info.

    This Mac has an AGP slot?

    Then this Mac is a PowerPC G4 AGP model.

    The G3 Blue & White model only came with a PCI video slot.

    PCI and AGP cards are not interchangeable. They are two different technologies.

     

    Yes, holding down the "C" key will start the Mac from an install disc in the disc drive.

    You need to really research which video cards work in a Mac.  Generally, video cards that are designed to work in a PC DO NOT work in a Mac.

     

    You might be able to find, either on eBay, Amazon or Craigslist, CPU upgrades for this Mac.

    Here's a 1.8 G4 dual processor card that your Mac might be able to install and run.

    This is one of the last retail, commercial CPU upgrades still available for older PowerPCs

    It's from OWC. You may, also, call them to see if this may work in your Mac, if interested

     

    http://eshop.macsales.com/item/NewerTech/MAXG47D1600/

     

    You maybe able to find the single CPU upgrades through my above advice.

    Generally, for these models , the CPUs were on easy to remove/install ZIF (Zero Insertion Force) cards.

    Armed with this info, you may reconsider making this a more speedier Mac.

    With a substantial CPU upgrade, you might be able to get OS X 10.5 Leopard to run on this Mac!

    It all depends on how far you really want to go.

    Good Luck!

  • BDAqua Level 10 Level 10 (114,715 points)
    Currently Being Moderated
    Oct 12, 2012 4:10 PM (in response to Jacumba)

    Reset OS X Password Without an OS X CD...

     

    http://theappleblog.com/2008/06/22/reset-os-x-password-without-an-os-x-cd/

     

    Admin Hack...

     

    http://www.hackmac.org/?q=node/4

     

    Starts up like the first time you buy a new Mac, but after filling in all that info again, you should have access to the computer and the other Users & files will still be there... give the new User a different name than an existing one.

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