Power mac G5 will not stay asleep

Hi, My power mac G5 will not stay asleep--it goes to sleep for several seconds then wakes up again = what to do?

Hi Al,
Most likely cause is a PCI card, or some attached USB or Firewire device, but possiblt 3rd party SW.
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
How to reset the SMU/PMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...
http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for Sleep problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

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My iMac will not stay asleep. A few seconds to a few minutes after I put it to sleep, it comes back on.

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My Power Mac G5 will not fully boot without safe mode, it only comes to a blue screen where my cursor duplicates in to 2, (one is frozen, one can move by moving the mouse). What is my problem, and how do I fix it?

Great clue Lukas...
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
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My Power Mac G5 Will Not Turn ON

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Thanks.

Same thing happened to my G5 dual (late 2004 model). Just did a quick search to find out "power supply unit failure" is most likely the cause.
Here are some useful links:
This guy replaced the PSU and documented the process:
http://damntechnology.blogspot.com/2009/02/rebuilding-powermac-g5-power-supply.h tml
Taking out the heat sinks to get to the PSU is a challenge. This link shows how:
http://forums.techpowerup.com/showthread.php?p=1476640#post1476640
This repair shop in Fremont CA seems to have pretty reasonable price to do the repair:
http://www.dttservice.com/powermacg5.html
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Hmmm, something else is going on I guess...
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Apple Mac OS X 10.4 Tiger (Full Install) DVD Retail Version
Item #:
MA453Z/A 1005166
Compatible with eMac (2005), iBook G4 (Late 2004), iBook G4 (Mid 2005), iMac G5 17-inch (ALS), iMac G5 20-inch (ALS), iMac G5 (17-inch iSight), iMac G5 (20-inch iSight), iMac (Early 2006 17-inch), iMac (Early 2006 20-inch), Mac mini, Mac mini (Late 2005), Mac mini (Early 2006), MacBook Pro, Power Mac G5 (Early 2005), Power Mac G5 (Late 2005), PowerBook G4 (15-inch Double-Layer SD), PowerBook G4 (17-inch Double-Layer SD).
Also...
Mac OS X Tiger 10.4 Drop-in Install Hardware Bundle (CDVersion)
Item #:
2Z691-5306-A 1002481
Compatible with eMac (2005), iBook G4 (Late 2004), iBook G4 (Mid 2005), iMac G5 17-inch (ALS), iMac G5 20-inch (ALS), iMac G5 (17-inch iSight), iMac G5 (20-inch iSight), iMac (Early 2006 17-inch), iMac (Early 2006 20-inch), Mac mini, Mac mini (Late 2005), Mac mini (Early 2006), MacBook Pro, Power Mac G5 (Early 2005), Power Mac G5 (Late 2005), PowerBook G4 (15-inch
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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/
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http://www.islayer.com/apps/istatpro/
If you have any temps in the 70°C/160°F range, that's likely it.

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Friends I have a Power Mac G4 MDD Dual 1Ghz/ 10.5.8 /2 GB Ram. For the past several months the only way for me to start the Mac was to un plug the power cord, then plug it back in. Computer behaved fine in every aspect. At times the Mac would shut down instead of going to sleep or shut down after several days of sleep. However the last several days it would not start up at all. I press the button on the MAC, fan would start and light would glow for about a second, then die. I read on the net to un plug everything, remove the battery, press the reset button inside the mac, hold in for 5 seconds, then press the start button for 5 seconds. Let it alone for 1/2 hour.... Unit still did not respond. So, I repeated the procedure and let it alone overnight. It started with no problems the next morning!! It would even restart.... no problems. It would even start up after shut down, ( I now know it must be within minutes). Thinking I had fixed the problem I shut down the computer again. Returned that night.. would not restart. Repeated the above procedure and this morning it started back up...... Could it be the power supply? It's currently asleep but wakes up... no problem. Computer works... except if I shut down for any length of time.... What could be wrong? Can I do any other procedure while it's alive and running? Any test I could perform? Can power supplies act like this? Any suggestions? Why does it start up after the above procedure?
Thanks in advance for your time...........
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I would first replacve the internal PRAM memory battery. Check this site for battery part numbers and sources. https://sites.google.com/site/macpram/mac-pram-nvram-cuda-pmu-battery-tutorial Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
Some things to try.
* Reset the PMU http://support.apple.com/kb/ht1939
* Resetting the Logic Board - Resetting the logic board can resolve many system problems. Whenever you have a unit that fails to power up, you should follow this procedure before replacing any modules.
1 Unplug the computer.
2 Press the Power On button on the front of the unit.
3 Open the side access panel.
4 Remove the battery from the logic board.
5 Wait at least 10 minutes before replacing the battery.
6 Make sure the battery is installed in the correct +/-
direction.
7 Reassemble the computer and test the unit.
Note:
This procedure resets the computer’s PRAM. Be sure to
check the computer’s time/date and other system parameter settings
* Resolve startup issues and perform disk maintenance with Disk Utility and fsck
http://docs.info.apple.com/article.html?artnum=106214
* Troubleshooting: My computer won't turn on
http://docs.info.apple.com/article.html?artnum=300552
* Power Mac G4: Computer Does Not Power On, No Fan Movement
http://docs.info.apple.com/article.html?artnum=95038
 Cheers, Tom

Will Not Stay Asleep

Hi All- I have a 2006 white MacBook that has treated me so well, until now. She just won't stay asleep. When I put her into sleep mode-a second or two later the optic drive checks itself and the computer wakes up. This has come to be over the past few weeks and it has been waking up faster as time passes. These are the steps I've taken in which to try and ameliorate this problem. All have had no effect.
1) Resetting SMC
2) Resetting PRAM
3) Changing the RAM
4) Turned off file sharing-to prevent waking
5) Don't have bluetooth so that's not waking her
6) Shut down and restarted
7) Changing the hibernate mode in console from 3 to 0
8) Turning off airport
9) Closing all applications
10) Talking sweet and asking nicely.
The response is the same whether I close the lid or push the power button and choose sleep. I have been hounding the forums for some solutions, but I have exhausted the solutions that I have found. Bit of service history: Replaced the battery under the battery recall with a new one, replaced a faulty AirPort card this past summer and the lower plastic case on the bottom. All done at an authorized service center. Been working fine since then, until a few weeks ago. Also the only variation on stock configuration is an upgraded hard drive to a Seagate 500GB last year, but have had no problems associated with that.
Help would be appreciated. I am out of warranty-my three years is up, so hopefully it's nothing nasty. Cheers all and thanks for the info in advance.

I also have the same problem. I have the newer battery as per the original post, and no other modifications. Otherwise my story is identical.
Any suggestions?
Edit: After some more fiddling I found that bluetooth had turned itself on and was messing with my sleeping, I've never used it before and made a point to have it off, but somehow it came back on. Maybe this can help? Its worth checking it again.
Message was edited by: Utheran

Power mac g5 will not start

please help me !power mac g5 a1047 will not start!

A1047 refered to all PowerMac G5 towers, as this page explains. What you need is the EMC#. That will tell you if you have a liquid cooling G5 tower, and if you do, that's another reason many fail to start because the coolent can leak.

Power Mac G5 will not power on

Ok a little background:
Bought this (June 2004, dual 2.0 ghz) from a friend. Was fully working at the time. I took apart the computer to clean all the parts, it was quite dusty after 4 years of service. Now when I put everything back together, it won't power up!
I was quite extensive in my disassembly (I took out logic board, PSU, HD cage, all fans), and made sure everything was back in order. I am quite experienced at working with computers, so I am not inclined to say it was my fault that I probably statically discharged any components or damaged it when disassembling (I have built and serviced many computers before).
I am guessing it is the PRAM battery that is at fault? I have read a dead battery will cause the machine to not power up at all, and it is after all a 4 year old computer, so battery life was probably reached, so could it be just a wierd coincidence that after I cleaned it out it failed to start? PSU doesn't seem to be broken because there are two clicks whenever I plug it in.
One thing I did notice was that when I took out the battery and plugged it in, the power LED blinks once quickly, but when I put the battery back in and plug it in, the power LED doesn't blink. That is the only indicator that there is some life in the system (are there other diagnostic LEDs in the logic board I am not aware of?). Resetting the PMU does not fix anything, nor is leaving the battery out for an extended amount of time.
Any ideas Mac Gurus?
Thanks!

RAM stores certain system and device settings in a location that Mac OS X can access quickly. Exactly which settings are stored in the computer's PRAM varies depending on the type of computer as well as the types of devices and drives connected to the computer. Parameter RAM is a small area of non-volatile RAM (NVRAM).
Some information stored in PRAM includes:
Display and video settings such as refresh rate, screen resolution, number of colors
Startup volume choice
Speaker volume
Recent kernel panic information, if any
DVD region setting
If you battery is bad this info is not available and your Mac will not start up>
Message was edited by: macbig

Power Mac G4 will not Recognize any Internal Hard Drives

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bh

Depressing/holding the Option key at startup activates the Startup Manager (not open firmware). The resulting window shows all of the available startup volumes (hard drives, CD, DVD, etc).
Look at A flashing question mark appears when you start your Mac
http://docs.info.apple.com/article.html?artnum=58042
Will it boot in Safe Mode? See
What is Safe Boot, Safe Mode? (Mac OS X)
http://docs.info.apple.com/article.html?artnum=107392
*Resolve startup issues and perform disk maintenance with Disk Utility and fsck*
http://docs.info.apple.com/article.html?artnum=106214
I'm not sure it would resolve your problem, but try a PMU reset. See Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
 Cheers, Tom

Power mac G5 will not stay asleep

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