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Frequent freezes on B&W G3

7353 Views 21 Replies Latest reply: Jan 12, 2009 9:14 PM by Peter Nelson1 RSS
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Peter Nelson1 Calculating status...
Currently Being Moderated
Oct 14, 2008 7:30 AM
Hello,
I just recently acquired a B&W G3 (450 MHz) to replace my old Beige G3. I transplanted the 40GB & 80 GB IDE hard drives, along with a USB 2.0 PCI card, from the Beige to the B&W. Although it generally boots up OK, it seems to have a problem freezing up--several times a day lately. It would appear that this is probably hardware related, because (1) it froze while running the Panther installer (booted from the install CD), and (2) it froze last night while idle, waiting for its next scheduled Retrospect backup run.

Can anyone on this board offer advice for conclusively diagnosing a freeze problem like this? It would really be a shame to have to junk the whole machine over a problem that may be fixable by replacing a minor component.

I did run TechTool Pro (some pre-OS X version; don't remember the exact version number) under OS 9.2.2 on the original 9 GB SCSI HD, before transplanting the 40 & 80 GB drives. No problems were detected at that time. I have not yet re-run TechTool since the transplant; I am ultimately planning on upgrading to an OS X compatible version (Micromat's current version has a CD image for a Panther-compatible back-level version); in the meantime, I will see if anything shakes out under the 9.2.2 version.

Thanks in advance for any help you can provide here.

Pete
B&W G3 450, Mac OS X (10.3.x), 640 MB RAM; 40GB & 80GB HD's
  • Dave Hamilton Level 5 Level 5 (6,795 points)
    Currently Being Moderated
    Oct 14, 2008 2:35 PM (in response to Peter Nelson1)
    Have you reset the PRAM?
    http://support.apple.com/kb/HT1379

    Also, if you are using the OS install from the Beige in the B&W, it may not have the correct files for the B&W.
    G4 Digital Audio, 1.33GHz 7455B CPU upgrade, Pioneer DVR-115, 1.5GB CL2 RAM, Mac OS X (10.5.4), Flashed Radeon 9800XT 256MB, upgraded case + PSU fans
  • Grant Bennet-Alder Level 8 Level 8 (48,105 points)
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    Oct 14, 2008 4:10 PM (in response to Dave Hamilton)
    That sounds like you have the "HeartBreaker" Rev 1 Blue & White G3. It is sort of flaky... never the same thing twice... It almost works right... sometimes it crashes... sometimes the Drives get corrupted... seems to happen at times of highest disk activity, like installing software.

    Have you made sure that you do not have the deadly combination of Rev 1 Blue & White AND a Hard Drive Faster than the original or Larger than about 40 GB (which are almost all Faster than the original)? This article contains the "litmus test" to look for under "3. Revised IDE Controller Chip":

    http://www.xlr8yourmac.com/G3-ZONE/yosemite/newfeatures.html
    Beige G3,G3 B+W,G4/867,G4/MDD, Mac OS 8.6 or Earlier, and 9.2, 10.4 and Server - LW IIg, LW 4/600, ATalk ImageWriter LQ
  • John Helock Level 2 Level 2 (195 points)
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    Oct 14, 2008 6:57 PM (in response to Peter Nelson1)
    The B&W G3 is very picky about ram. It is best to use matched ram that is PC100, 8ns, CL2, non-parity. There is a lot of ram that is PC100 but is 10ns. It has been my experience that this will lock up the system with annoying frequency.

    If you have OS 9 installed, try downloading and running Dimm First Aid to check your ram.

    http://www.mactcp.org.nz/dimmfirstaid.html
    MacBook, Mac OS X (10.5.1)
  • Jeff Level 6 Level 6 (11,160 points)
    Currently Being Moderated
    Oct 15, 2008 10:26 PM (in response to Peter Nelson1)
    "Can anyone on this board offer advice for conclusively diagnosing a freeze problem like this? "

    To rule out a problem caused by an overheated processor, have you checked out the chassis fan and the power supply fan to be sure that both are clean, running smoothly, and moving air? Given the age of the computer, you may wish to remove the processor's heat sink and remove the old thermal pad from it, apply a good quality thermal compound (like Arctic Silver) to the processor, and then reinstall the heat sink. If you do this, be sure that the heat sink retainer clip is installed correctly, so that the offset/bend in it is positioned directly over the center of the processor.
  • Dave Hamilton Level 5 Level 5 (6,795 points)
    Currently Being Moderated
    Oct 15, 2008 10:50 PM (in response to Peter Nelson1)
    If the SCSI card is the OEM Adaptec 2940U2B, there is a firmware update for it.
    http://docs.info.apple.com/article.html?artnum=60409
    G4 Digital Audio, 1.33GHz 7455B CPU upgrade, Pioneer DVR-115, 1.5GB CL2 RAM, Mac OS X (10.5.4), Flashed Radeon 9800XT 256MB, upgraded case + PSU fans
  • Grant Bennet-Alder Level 8 Level 8 (48,105 points)
    Currently Being Moderated
    Oct 20, 2008 3:48 PM (in response to Peter Nelson1)
    8.6 was the current version when that firmware update was issued. You should read the article as if it said OS 8.6 through 9.2.2.

    It will install under OS 9 just fine.
    Beige G3,G3 B+W,G4/867,G4/MDD, Mac OS 8.6 or Earlier, and 9.2, 10.4 and Server - LW IIg, LW 4/600, ATalk ImageWriter LQ
  • Grant Bennet-Alder Level 8 Level 8 (48,105 points)
    Currently Being Moderated
    Oct 20, 2008 3:51 PM (in response to Peter Nelson1)
    You may want to download the free Utility DIMM First Aid to take a look at your RAM settings:

    http://www.mactcp.org.nz/dimmfirstaid.html
    Beige G3,G3 B+W,G4/867,G4/MDD, Mac OS 8.6 or Earlier, and 9.2, 10.4 and Server - LW IIg, LW 4/600, ATalk ImageWriter LQ
  • John Helock Level 2 Level 2 (195 points)
    Currently Being Moderated
    Oct 24, 2008 1:01 AM (in response to Peter Nelson1)
    Peter,

    In a way, the kernel panic is good. By this I mean that a panic log has been recorded. You can read the panic log via the Apple System Profiler or at /Library/Logs/panic.log. If you can locate and post this log file, we may be able to get to the root of the issue.
    MacBook, Mac OS X (10.5.1)
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