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Power Mac G4 MDD

1636 Views 29 Replies Latest reply: Apr 19, 2013 9:48 AM by MajorMacintosh RSS
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MajorMacintosh Calculating status...
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Apr 1, 2013 7:37 PM

Hi Everyone!

I need some help and I know this is the place to go.

I just picked up a Power Mac G4 1GHz Duel's (MDD) 2002 model, runs like a champ for $0.00. A friend gave me a 1.25GHz Duel 2002 model that won't power up.  Here is my question, because I don't know whats wrong with the 1.25GHz can I swap the processor from the 1.25GHz and use it on the 1GHz model to verify if the processor is good, or if the processor is bad on the 1.25GHz could that damage the motherboard on the working 1GHz machine?

 

Here are the motherboard model numbers if that helps

1GHz Duel = 820-1453-A (2002)

1.25GHz = 820-1474-A (2002)

 

 

My ultimate goal is to find out what is wrong with the 1.25GHz machine, (ie) Power Supply, Motherboard or Processor

 

 

Thanks In Advance!

MajorMacintosh

Power Mac G4 MDD, Mac OS X (10.5.8)
  • BDAqua Level 10 Level 10 (114,675 points)
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    Apr 1, 2013 11:35 PM (in response to MajorMacintosh)

    Hi, as long as they're the same bus speed should be n problem.

     

    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

  • BDAqua Level 10 Level 10 (114,675 points)
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    Apr 2, 2013 10:56 AM (in response to MajorMacintosh)

    I don't see how it could damage the computer in anyway... other than I guess everything has a slim possibility, but I consider that not very likely.

  • Glen Doggett Level 4 Level 4 (1,780 points)
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    Apr 2, 2013 8:22 PM (in response to MajorMacintosh)

    If you are going to remove the heatsinks and swap CPUs, you should consider this a good time to clean and replace the thermal paste.

  • BDAqua Level 10 Level 10 (114,675 points)
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    Apr 2, 2013 8:44 PM (in response to Glen Doggett)

    Very good point Glen!

  • Dave Hamilton Level 5 Level 5 (6,795 points)
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    Apr 2, 2013 10:00 PM (in response to MajorMacintosh)

    If you don't have heatsink paste on hand, Arctic MX4 would be a good choice, and it doesn't conduct electricity.

  • BDAqua Level 10 Level 10 (114,675 points)
    Currently Being Moderated
    Apr 2, 2013 10:34 PM (in response to Dave Hamilton)

    Excellent added info, thanks Dave!

  • BDAqua Level 10 Level 10 (114,675 points)
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    Apr 2, 2013 11:28 PM (in response to MajorMacintosh)

    Sadly, japamac has been chased off byi nsults, but...

     

    https://discussions.apple.com/thread/2728129?start=0&tstart=0

  • BDAqua Level 10 Level 10 (114,675 points)
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    Apr 4, 2013 5:02 PM (in response to MajorMacintosh)

    If that's 119°F., that's great.

     

    You may have to uninstall iStat, & what version was it?

  • Glen Doggett Level 4 Level 4 (1,780 points)
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    Apr 4, 2013 7:55 PM (in response to MajorMacintosh)

    I have not had luck with waking up from sleep mode (in my G3 and G4) and I have absolutely no idea why.  I changed my energy saver preferences settings to never sleep and never put the hard drives to sleep, I only use the screen saver.  Possibly the hard drive or a PCI/USB/FW peripheral doesn't wake up when it should and then the machine panics?  I have no diagnosis or solution to the wake-from-sleep issue, other than to never sleep. 

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