Mac Pro 3,1 + 5870 power issues ?

Discussion in 'Mac Pro' started by /dev/toaster, Jun 14, 2011.

  1. /dev/toaster macrumors 68020

    /dev/toaster

    Joined:
    Feb 23, 2006
    Location:
    San Francisco, CA
    #1
    When I originally purchased my Mac Pro 3,1 I had installed a 3870 in it. It served me ok for a while but then I started having all of these random issues with the machine locking up. When it would lock up, sometimes it would give me a lot of problems starting back up again.

    So I spent the cash and upgraded to a 5870. Everything was for with it for a few months but now I am having issues with the machine just shutting off what seems like randomly. I could come back to the machine from it being idle for a few hours, move the mouse ... click on something that boom it turns off. When I got home today I logged back in, checked my email for 25 mins then out of no where it shut off. I can generally play WoW for an hour or two before it shuts down, but loading Starcraft 2 causes it to shutdown every single time.

    I am thinking it could be a bad PSU. I did an SMC reset, that didn't fix it and I have also tried disabling the hard drives from sleeping. I am suspecting that the shutdown _might_ be caused when the drives try to spin up from sleep mode. I just made that change a little while ago so not sure what effect it will have on it.

    Anyway, is there anything else that I could try ? I am gonna make an appointment at the Apple store, but need to find someone to help me bring it there. I have a bad back and can't carry the machine very far. Trying to either fix it my self or find something to help me hold over until I can get it there.

    Thanks!
     
  2. nobiggiestudio, Jun 15, 2011
    Last edited: Jun 16, 2011

    nobiggiestudio macrumors newbie

    Joined:
    Jun 7, 2011
    Location:
    Sweden
    #2
    In the service manual, it is described as bad cooling or a faulty PSU.
    If you upgraded the CPU's there is a chance the PSU wont be able to feed the
    CPU's enough with power, it does got 900+ W.
    But it's all a question of how well the condition is. Will it actually put out the desired watts specified.
    Bad cooling can come from faulty cooling compound apply.
    Try to check the CPU's and heatsinks if the compound is spread all around.
    Also try to change the compound if you are using original. Buy some
    Artic silver S 5, costs about ten bucks at a locally PC hardware store.

    To start of, check the lights at the RAM's
    Push a small button
    Remove the computer’s side access panel and observe the diagnostic LEDs, specifically LED
    5 and LED 6 (the CPU A and B Overtemp LEDs). Refer to “Diagnostic LEDs” in this chapter for
    more information on how to locate and interpret these LEDs. If either LED is flashing, it may
    indicate an initial processor over-temperature condition. If either LED is solidly on, it may
    indicate a chronic processor over temperature condition.

    If you could not solve this problem, take it to an Apple store to get help.
    Call a cab, the driver is possibly helping you with the luggage, at apple store the driver
    is pretty likely helping you carrying it in to the store, other ways the staff will surely help you.
    At least in Europe, Sweden. You always being asked for help with luggage when the cab arrives.


    "Here is a cut out from my service manual:"

    How to Use the Symptom Charts
    The Symptom Charts included in this chapter will help you diagnose specific symptoms related
    to the product. Because cures are listed on the charts in the order of most likely solution, try
    the cures in the order presented. Verify whether or not the product continues to exhibit the
    symptom. If the symptom persists, try the next cure.
    Note: If a cure instructs you to replace a module, reinstall the original module before you
    proceed to the next cure.
    Important: The only way to shut off power completely to the computer and display is to
    disconnect their power plugs from the power source. Make sure the power cords to the
    computer and display are within easy reach.
    Startup Failures
    When testing a computer for the following symptoms, remove the side access panel so you can
    better observe or listen for fan movement.
    Note: Be sure to check the “Memory” and “Power-On Self Test” topics in the General Information
    section of this chapter. Incorrect installation of DIMMs or incompatible memory will not allow the
    system to start up correctly. For information on how to correctly install DIMMs, see the “Memory
    (DIMMs)” topic in the Take Apart chapter.
    Important: For troubleshooting purposes, Mac Pro (Early 2008) computers may be started up
    and diagnosed with a single processor installed in either the upper (CPU A) or lower (CPU B)
    position.
    Power-on LED does not illuminate when power button is pressed, fans do not
    spin, and there is no boot tone or video
    1.
    Verify power outlet is good.
    2. Check that diagnostic LED 2 is on when the power cord is connected.
    3. Replace power cord.
    4. Check that diagnostic LED 2 is on when the power cord is connected.
    5. Reset the logic board. Refer to “Resetting the Logic Board” in this chapter.
    6. Verify power supply cables are fully connected.
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 164
    7.
    Verify that processors are properly seated. Check diagnostic LED 3 and/or LED 4.
    8. Verify that processors’ mounting clamps are properly tightened.
    9. Test whether the front panel board or power button is at fault. Remove the installed front
    panel board and test with a known-good front panel board.
    10. Replace front panel board.
    11. Replace power button.
    12. Replace power supply.
    13. Replace logic board.
    Power-on LED illuminates when pressed in, but goes out when button is released,
    there is no boot tone or video, but you can hear a small click
    1.
    Check diagnostic LED 2 for trickle voltage from the power supply. Refer to “Power Supply
    Verification” in this chapter. If verification fails, replace power supply.
    2. Verify that the processors are properly seated. Check diagnostic LED 3 and/or LED 4
    3. Verify that the processor mounting clamps are properly tightened.
    4. Replace the power supply.
    Power-on LED illuminates when power button is pressed but fans do not spin (or
    spin only momentarily) and there is no boot tone or video
    1.
    Reseat video card. (Make sure video card is fully inserted in connector and end of card is
    secured by the connector latch.) For video cards that require power cables, check that they
    are connected.
    2. Reset logic board. Refer to “Resetting the Logic Board” in this chapter.
    3. Verify power supply cables are fully connected.
    4. Check diagnostic LED 3 and/or LED 4 for processor connection.
    5. Reseat processors and check for bent pins.
    6. Check diagnostic LED 2 for trickle voltage from the power supply. Refer to “Power Supply
    Verification” in this chapter. If verification fails, replace power supply.
    7.
    Replace logic board.
    8. Replace processor.
    Power-on LED illuminates when power button is pressed and fans spin
    continuously but there is no boot tone or video
    1.
    Reseat video card. (Make sure video card is fully inserted in connector and end of card is
    secured by the connector latch.) For video cards that require power cables, check that they
    are connected.
    2. Verify speaker cable is fully seated.
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 165
    3. Reset logic board. Refer to “Resetting the Logic Board” in this chapter.
    4. Check diagnostic LED 3 and/or LED 4 for processor connection
    5. If only one of the CPU Error LEDs (LED 3 or 4) comes on, try swapping the processors. If the
    Error LED follows the processor to the other processor location, replace that processor.
    6. Replace logic board
    Power-on LED illuminates when power button is pressed, fans spin, and boot tone
    chimes, but there is no video
    1.
    Verify display is properly connected and powered on.
    2. Check video card connector and display cable for any bent pins.
    3. Reseat video card. (Make sure video card is fully inserted in connector and end of card is
    secured by the connector latch.) For video cards that require power cables, check that they
    are connected.
    4. Reset PRAM (restart computer while holding down Command-Option-P-R keys until second
    boot tone chimes)
    5. Reset logic board. Refer to “Resetting the Logic Board” in this chapter.
    6. Replace video card
    7.
    Replace logic board
    Power-on LED does not illuminate when power button is pressed, but fans spin,
    boot tone chimes, and there is video
    1.
    Reseat front panel board
    2. Replace front panel board
    3. Replace logic board
    4. Replace power supply
    Power-on LED illuminates, fans spin up, no boot tone, and the system shuts down
    within a few minutes
    1.
    Open the side access panel and observe all diagnostic LEDs. Refer to “Diagnostic LEDs” in
    this chapter for more information on how to locate and interpret these LEDs. Troubleshoot
    further if any LEDs indicate any failure.
    2. Reseat the processors and check for bent pins
    3. Replace the processors
    4. Replace the logic board
    5. Replace the power supply
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 166
    Fans
    Individual fan failure
    1.
    Verify fan is properly connected.
    2. Verify all other fans are working properly. If all fans seem to have failed, the problem is most
    likely not the fans. Reset the logic board to see if this resolves this problem.
    3. Replace fan
    4. Replace logic board
    Fans run at high speed (computer may shut down or may just hang and not shut
    down as a result)
    1.
    Check for proper ventilation around the exterior of the computer.
    2. If the system is operating normally except for all fans running at full speed, try resetting the
    SMC.
    3. If the system appears to be hung (unresponsive), then it’s normal behavior for all fans to
    ramp to full speed. In this case, troubleshoot any possible operating system, RAM, processor,
    logic board, and power supply issues, in that order.
    4. Remove the computer’s side access panel and observe the diagnostic LEDs, specifically LED
    5 and LED 6 (the CPU A and B Overtemp LEDs). Refer to “Diagnostic LEDs” in this chapter for
    more information on how to locate and interpret these LEDs. If either LED is flashing, it may
    indicate an initial processor over-temperature condition. If either LED is solidly on, it may
    indicate a chronic processor over temperature condition.
    5. Verify proper processor heat sink installation (see the take apart section for more information
    on heat sink installation).
    6. Verify all thermal sensors and their cables are properly connected, especially the ambient
    temperature sensor board.
    7.
    Verify all fans are operating properly and are unobstructed, especially the front intake fan.
    8. Verify that the proper type of memory is installed. (See “Memory” in the Take Apart chapter
    for more information.)
    9. Replace power supply.
    Computer performance seems sluggish or slow, or computer is completely hung
    1.
    Start up the computer from a known-good volume, such as its Installation disc, or an external
    hard drive, to isolate the issue to software or hardware. If the computer seems to perform
    adequately when booted in this way, troubleshoot as a software issue. If the computer
    continues to perform sluggishly when booted this way, continue following the steps below.
    2. Run Apple Service Diagnostic to verify hardware is functional. Address any diagnostic failures
    as necessary.
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 167
    3. Check for proper ventilation around the exterior of the computer.
    4. Remove the computer’s side access panel and observe the diagnostic LEDs, specifically LED
    5 and LED 6 (the CPU A and B Overtemp LEDs). Refer to “Diagnostic LEDs” in this chapter
    for more information on how to locate and interpret these LEDs. If either of these LEDs is
    flashing, this may indicate an initial processor over temperature condition. If either of these
    LEDs is solidly on, this may indicate a chronic processor over temperature condition. Initial
    processor over-temperature can cause symptoms such as sluggish computer performance. A
    chronic processor over-temperature condition can cause the computer to hang completely.
    5. Verify proper processor heat sink installation. (Refer to “Processor Heatsinks for 2.8 and 3.0
    GHz Processors” or “Processor Heatsinks for 3.2 GHz Processors” in the Take Apart chapter
    for more information.)
    6. Verify all thermal sensors and their cables are properly connected, especially the ambient
    temperature sensor board.
    7.
    Verify all fans are operating properly and are unobstructed, especially the front intake fan.
    AirPort Extreme Card
    AirPort Extreme Card does not appear to function and is not recognized by
    System Profiler
    1.
    Start up the computer from a known-good volume (such as an external hard drive) with
    AirPort driver software installed, to isolate the issue to software or hardware. If the computer
    seems to perform adequately when booted in this way, troubleshoot as a software issue. If
    the computer continues to exhibit the issue, follow the steps below.
    2. Reseat card and antenna cables connected to card
    3. Replace card
    4. Replace logic board
    AirPort Extreme Card does not appear to function or has weak performance and is
    recognized by System Profiler
    1.
    Start up the computer from a known-good volume (such as an external hard drive) with
    AirPort driver software installed, to isolate the issue to software or hardware. If the computer
    seems to perform adequately when booted in this way, troubleshoot as a software issue. If
    the computer continues to exhibit the issue, follow the steps below.
    2. Reseat card and antenna cables connected to card
    3. Replace card
    4. Replace logic board
    5. Replace AirPort Extreme antenna board / cable assembly
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 168
    Bluetooth Card
    Bluetooth Card does not appear to function and is not recognized by System
    Profiler
    1.
    Start up the computer from a known-good volume (such as an external hard drive) with
    Bluetooth driver software installed, to isolate the issue to software or hardware. If the
    computer seems to perform adequately when booted in this way, troubleshoot as a software
    issue. If the computer continues to exhibit the issue, follow the steps below.
    2. Reseat card and antenna cable connected to card
    3. Replace card
    4. Replace logic board
    Bluetooth Card does not appear to function or has weak performance and is
    recognized by System Profiler
    1.
    Start up the computer from a known-good volume (such as an external hard drive) with
    Bluetooth driver software installed, to isolate the issue to software or hardware. If the
    computer seems to perform adequately when booted in this way, troubleshoot as a software
    issue. If the computer continues to exhibit the issue, follow the steps below.
    2. Reseat card and antenna cable connected to card
    3. Replace card
    4. If poor signal strength is the issue, replace the Bluetooth antenna board / cable assembly
    5. Replace logic board
    Other Failures
    Optical drive
    1.
    Try different optical media.
    2. If two drives are installed, check the Master/Slave or Cable Select jumpers on both optical
    drives (this will depend on drive vendor). Both drives should be set to ‘Cable Select’ mode for
    proper operation.
    3. If two drives are installed, test one optical drive at a time by disconnecting one of the drives
    to see if the other one works.
    4. Replace optical drive cable
    5. Replace optical drive
    6. Replace logic board
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 169
    Front Panel FireWire port
    1.
    Reset SMC.
    2. Reseat front panel board cables
    3. Replace front panel board cables
    4. Reseat front panel board
    5. Replace front panel board
    6. Replace logic board
    Rear FireWire port
    1.
    Reset SMC.
    2. Replace logic board
    Front Panel USB 2.0 port
    1.
    Reseat front panel board cables
    2. Replace front panel board cables
    3. Reseat front panel board
    4. Replace front panel board
    5. Replace logic board
    Rear Panel USB 2.0 port
    Replace logic board
    Internal speaker
    1.
    The Mac Pro (Early 2008) should emit a startup chime through its internal speaker, regardless
    of whether headphones or external speakers are connected. If you hear a normal startup
    chime, but no other audio is produced from the internal speaker, and there is nothing
    connected to either audio-out port, suspect a damaged front panel headphone port or rear
    audio-out port. In this case, replace the front panel board or logic board as necessary. If you
    do not hear a startup chime through the internal speaker, even after resetting PRAM, follow
    the steps below.
    2. Check the sound output settings in the Sound preferences to ensure the internal speaker is
    selected.
    3. Check speaker cable connection
    4. Replace speaker
    5. Replace logic board
    Mac Pro (Early 2008) Troubleshooting — Symptom Charts 170
    Audio IO (front headphones)
    1.
    Start up the computer from a known-good volume (such as its Installation disc or an external
    hard drive), to isolate the issue to software or hardware. If the computer seems to perform
    adequately when booted in this way, troubleshoot as a software issue. If the computer
    continues to exhibit the issue, follow the steps below.
    2. Reset PRAM
    3. Reseat front panel board
    4. Replace front panel board
    5. Replace logic board
    Audio IO (rear audio line in; rear audio line out)
    Note: A red light shines from the rear optical audio-out connector, whether or not a device is
    connected to it. This is a normal condition.
    1.
    Start up the computer from a known-good volume (such as its Installation disc or an external
    hard drive), to isolate the issue to software or hardware. If the computer seems to perform
    adequately when booted in this way, troubleshoot as a software issue. If the computer
    continues to exhibit the issue, follow the steps below.
    2. Check Sound settings in System Preferences
    3. Reset PRAM
    4. Replace logic board
     
  3. /dev/toaster thread starter macrumors 68020

    /dev/toaster

    Joined:
    Feb 23, 2006
    Location:
    San Francisco, CA
    #3
    Thanks for the advice on troubleshooting. Tried everything I could and still had problems with it. I was forced to bring it down to the Apple store. They replaced the PSU.

    I brought it home, fired it up and after 2 hours it did the same thing again. Brought it back to the store again and they are saying the issue is that the Mac 3,1 isn't supposed to run the 5870. They said I might be able to run just the 5870 alone without having a secondary card in the system. I have the stock 2600 in it for a 3rd monitor.

    Its a big bummer because I can't currently afford to upgrade to a newer Mac. Has anyone had issues with a 5870 and a secondary video card in a Mac 3,1 ?
     
  4. Cindori macrumors 68040

    Cindori

    Joined:
    Jan 17, 2008
    Location:
    Sweden
    #4
    that setup is fine, you said it yourself that it worked fine for a period.

    people at mac stores are perhaps masters at showing you features of iphoto, imovie, etc. but when it comes to hardware, they probably couldn't tell you if Radeon 5870 is a Nvidia or ATI card....


    I say run with one card at a time to rule out any issues with the card itself.
     
  5. spidey3 macrumors regular

    Joined:
    Jul 1, 2010
    #5
    Also, please check - are you seeing any unusual errors in kernel.log or system.log?
     
  6. nobiggiestudio, Jul 1, 2011
    Last edited: Jul 1, 2011

    nobiggiestudio macrumors newbie

    Joined:
    Jun 7, 2011
    Location:
    Sweden
    #6
    Well, it might not be supported by you motherboard.
    It's not specific about macs. Its just the same with all computers.

    Your part is probably not compatible, but they still work. Thats good.
    Even so, strange things happen, and no one can explain why or what really going on because your motherboard just doesn't like your part that you bought.

    If you try the part in one other mac in the same series, Mac pro 3,1 was it?
    They might work because they are marketed the same, same speed, parts and so on but the chips is from a different vendor(company) so it might work on that other mac but not yours.
    This often occurs, because various companies would get to many orders on parts if Foxconn who builds Apple devices would stuck to only one vendor. So they might get some parts from Hitachi and the other month they switch to Samsung parts and next month they using texas instruments microchips and so on.

    I guess you just had a bad luck if you can't find anything in your logs as previous answer recommended.
     

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