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Powermac G5 dual 2.5 issues!

1152 Views 23 Replies Latest reply: Mar 4, 2012 9:51 AM by Michael Posz RSS
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Michael Posz Level 1 Level 1 (5 points)
Currently Being Moderated
Mar 1, 2012 4:47 PM

I purchased a pre-owned Powermac G5 Dual 2.5 ghz. It has 4gb ram and is running Mac OSX 10.5.8. Very shortly after I purchased the computer I had a crash and couldn't get it to start back up. I tried to re-install software and it would go part of the way thru and crash on the install every time. I started the machine in target mode and hooked it to my old trusty G4. I was able to install the software that way with no issues. I then went back to the G5 and tried installing updates, but part of the way thru the updates it would crash saying the update was possibly corrupt, ( these were straight from apple so I doubt that ) thus leaving my g5 unable to restart because of the partial software update. I did the target mode again, this time installing all of the updates using my G4. After all was said and done, I was back to where i had started when i bought it. I now keep to be getting freeze issue with the machine. I can be online using safari and all of a sudden I get the spinning color wheel. When this happens I can not even force quit the app, it will just sit there spinning away. Tonight i tried opening firefox and it started up and ran for a few minutes before freezing also. A few days ago I had tried to burn a dvd using toast, and that app also froze up and would not let me force quit. I have not had any issues like this from my G4, and after trying resetting the SMU, PRAM and many many hard restarts, I am no closer to knowing what the issue could be. Any help or ideas for me to try would be much appreciated.  Thanks, Mike

  • BDAqua Level 10 Level 10 (114,705 points)
    Currently Being Moderated
    Mar 1, 2012 5:32 PM (in response to Michael Posz)

    Have you blown the dust out of it since you got it?

     

    Possibly a temperature problem or bad RAM/RAM slots.

     

    Get Temperature Monitor to see if it's heat related...

     

    http://www.macupdate.com/info.php/id/12381/temperature-monitor

     

    iStat Menus...

     

    http://bjango.com/mac/istatmenus/

     

    And/or iStat Pro...

     

    http://www.islayer.com/apps/istatpro/

     

    If you have any temps in the 70°C/160°F range, that's likely it.

     

    The Memory test can really only be trusted if it finds a problem, not if it doesn't find a problem.

     

    Memtest OS X...

     

    http://www.memtestosx.org/joomla/index.php

     

    Rember is a freeware GUI for the memtest ...

     

    http://tech.kateva.org/2005/10/rember-freeware-memory-test-utility.html

  • BDAqua Level 10 Level 10 (114,705 points)
    Currently Being Moderated
    Mar 1, 2012 7:48 PM (in response to Michael Posz)

    Yeah, it's for sure  HEAT problem, but man, those are god CPUs, they generally blow above 75°C!???

     

    Is this liquid cooled? Are the fans working at high speed?

  • japamac Level 7 Level 7 (24,390 points)
    Currently Being Moderated
    Mar 1, 2012 10:37 PM (in response to Michael Posz)

    I am not sure if it is liquid cooled, how do I check it?

    I'm sure that 2.5 GHz machines of any vintage (yours is June 2004) are all LCS (liquid cooled).

    Open the tower and look.

    most, but not all, of the LCS versions have a sticker inside warning about the possibility of leakage.

     

    http://www.xlr8yourmac.com/systems/G5_coolant_leaks.html

  • BDAqua Level 10 Level 10 (114,705 points)
    Currently Being Moderated
    Mar 2, 2012 4:43 PM (in response to Michael Posz)

    Higher CPU use drives up temperatures.

     

    Either or all of these, the Thermal paste between CPUs & Heatsinks needs replacing, the liquid coolant has evaporated or slogged up, water pumps may not be working properly, recalibration needed.

     

    Did the fans go full blast before freezing?

  • BDAqua Level 10 Level 10 (114,705 points)
    Currently Being Moderated
    Mar 2, 2012 6:01 PM (in response to Michael Posz)

    Did the temps drop, or for longer since blowing it out?

  • BDAqua Level 10 Level 10 (114,705 points)
    Currently Being Moderated
    Mar 2, 2012 9:46 PM (in response to Michael Posz)

    How are the Fan Speeds in iStat?

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