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powermac g5 memory problems

1808 Views 25 Replies Latest reply: Nov 9, 2012 2:29 AM by Robert Albury RSS
  • Jacumba Level 4 Level 4 (2,325 points)
    Currently Being Moderated
    Nov 7, 2012 10:37 AM (in response to Robert Albury)

    I didn't think the ram was bad either, I've seldom seen ram go bad. I've seen the slots on the motherboard that the ram plugs into go bad, that is more common. But from what I've seen when the slot does go bad it doesn't recognize the ram at all for that slot.

    Where you mentioned freeze up and rasping sound. Those are symptoms I've seen with a bad hard drive. first the computer will get erradict, then as the hard drive gets worse, you'll get odd sounds from it, something like the rasping sound you mentioned. So I don't want to say go get a hard drive, I'm not 100% sure, but the symptoms are there.

    It's absolutely not the thermal paste.

    I've notice in the last couple of weeks on craigslist two G 5's showed up for $30, in working condition..Check around and see if you can pick one up for spare parts. If you find the same model it should have identical hardware in it. What model G 5 is this?

    Also I don't know if it's been mentioned but have you checked the pram battery on the motherboard? You can get it tested for free at radio shack.

  • japamac Level 7 Level 7 (24,390 points)
    Currently Being Moderated
    Nov 7, 2012 1:55 PM (in response to Jacumba)

    Don't tell me it don't

    Great, another "I know better than anyone" type.....


    IN GENERAL practice, and due to THE FACT that the G5 has a DUAL CHANNEL controller that DISTRIBUTES RAM between processors, for the G5 NEEDS RAM to be installed in sized pairs for NORMAL function to occur.


    Swapping PAIRS is a valid troubleshooting technique. Swaping one DIMM within a pair is a valid troubleshooting technique, but running unbalanced RAM will yield unreliable results.

    So don't post to me unless you know what your talking about

    I love you NOOBs that buy a used, junk Power Mac or two, come here begging for hellp, and after post like you have experience that transcends those of us that have used Power Macs from the time they were new.


    If you wish to be part of the community, then it would be best to practice some decorum.


    I'd like to see SUBSTANTATED technically correct proceedures or tested troubleshooting techniques that are VERIFIABLE, not just "because I know better".....

    I know that people who come here looking for help wany verifiable and tested. Vodoo is best left to other forums.


    I have a Mac that doesn't suppose to take a hard drive over 50 GB, well I put a 80 GB in and it worked.

    And what does that have to do with a G5 and it's related memory failure or memory controller BGA issue?

    That makes you the all knowing?

    How does that apply to a G5 period?!?


    In the words of The Who, Townscend and Daltrey, "Who the f*** are you?".......

  • Jacumba Level 4 Level 4 (2,325 points)
    Currently Being Moderated
    Nov 7, 2012 2:36 PM (in response to japamac)

    japamac, I'll work with you on resolving the G5 problem you are very good at posting information that you look up on the internet. My expierence is actually working with the hardware and I made a very informative post with my first one.


    I believe the hard drive is going bad. The symptoms are certainly there. I don't want to tell someone to just go out and buy a HD for a 9 year old computer. Or purchase ram as you suggested. Or pull the heat sink from the cpu and replace thermal paste. Failing electronics of a old computer is a tough call.


    I'd now suggest something simple like checking the pram battery. This can cause the start-up problems that the computer has expierenced. Then move on from there. So far it appears the ram is good. The fans are running so the power supply is working.. So if you have anything useful to offer please do. You may be rated high in this forum but you don't impress me at all.

  • ~Bee Level 7 Level 7 (30,580 points)
    Currently Being Moderated
    Nov 7, 2012 4:05 PM (in response to Robert Albury)

    I do not think that it is the memory modules which are faulty.


    japamac has been trying to tell you the answer.  There is a serious problem with your RAM sticks.  Either there's a miss-match between two sticks that are supposed to match, or one or more has gone bad or loose.


    The Memtest is straight-forward.  In fact, it is unusually strong in pointing out a problem. There's something really wrong with your RAM!


    One or more DIMM address lines are non-functional.

    Japamac is a long-time expert volunteer here,  earning over 23,000 thank you or solved points from Original Posters of questions.  You can take his recommendations to the bank.

  • Ronda Wilson Level 8 Level 8 (40,560 points)
    Currently Being Moderated
    Nov 7, 2012 5:47 PM (in response to Robert Albury)

    Nobody here has asked you the capacity of the hard drive and how much space remains available on it.



    I agree that it's more likely to be a RAM problem, but checking out the hard drive space would be a good idea, too.

  • japamac Level 7 Level 7 (24,390 points)
    Currently Being Moderated
    Nov 8, 2012 2:52 AM (in response to Jacumba)

    but you don't impress me at all.

    It's a good thing that I could care less about how you feel.


    you are very good at posting information that you look up on the internet.

    You mistake substantiating my claims and verifying my experience with the experiences of others who care to post on the internet as mere "looking up".


    You should realize that ones opinion means much more when it is shared by and confirmed by others.


    That is the difference between hearsay and fact.


    Right now, you are completely missing the meaning of the failed POST and discounting the report given by Memtest.


    But, I 'spose that you know better than all those that came before you, those that develop the test software, and those that have bothered to get their hands dirty with their own and others machines.


    As well, once you get off your high horse and start acting other than the rear portion of that same animal, maybe your information will be given more creedance.

    My expierence is actually working with the hardware

    Yet you ignore the failed POST, the historically documented cases of failed BGA on the memory controller and the related symptoms of such, the report offered by Memtest verifying that memory function is abnormal and the historical issues of failed G5 logic boards which present as memory issues...


    Good luck to the OP......

  • Jacumba Level 4 Level 4 (2,325 points)
    Currently Being Moderated
    Nov 8, 2012 7:26 AM (in response to japamac)

    japamac, would you please start another post if you just want to rant at me. It is taking away from this post and to the person that is seeking useful information. I would hope the moderator of this forum would delete these off topic post by japamac that are directed at me and serving no useful purpose, other than a distraction to everyone.  Jacumba

  • Jacumba Level 4 Level 4 (2,325 points)
    Currently Being Moderated
    Nov 8, 2012 12:35 PM (in response to Robert Albury)

    Robert, didn't that computer come with a Apple Hardware Test CD, for diagnosing hardware problems? I have one with the software package I bought from Apple. Is it worth running it? I don't know how good it is, but Apple did go through the trouble of putting them out.


  • Jacumba Level 4 Level 4 (2,325 points)
    Currently Being Moderated
    Nov 9, 2012 1:24 AM (in response to Jacumba)

    I remembered something I thought I'd pass on to you, about the first time I seen a hard drive go bad. The computer was having problems so I decided to defragment the HD. Several times I tryed and it wouldn't defrag which I thought was kind of odd. It wasn't till later that I heard a odd sound coming from the HD.

    The thing that stood out to me in your first post was freezing up with the "raspy sound". My very first thought was I bet it's the HD cause of the sound with the freezing.

    In your last post you now mention it freezes almost immediately. That's another indication, once a HD starts to go bad it progresses very quickly, it goes downhill real fast. LOL

    Where is the raspy sound coming from?


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