IMac G5 Power Problem

Hello there,
My iMac G5 ALS 20" 2GHz (bought from new in May 2005) just shut down on me this morning for no apparent reason. I then tried restarting and it now shuts down or doesn't start at all. I had the hard drive replaced a couple of months after buying it, and that appears to be fine now.
There is no warning, it just shuts down with no apparent cause...turns itself off. I have heard there may be an issue with the power unit. What is my best bet for getting it fixed? I don't really want to have to lug it to the Apple Retail store. I have Applecare.
Thanks in advance for anyone's help/advice.

Your iMac may have a problem with the power supply that may be covered by an Apple Repair Extension Program. See http://www.apple.com/support/imac/powersupply/repairextension/ for more info.
My iMac 20 inch purchased in June 2005 started turning off intermittently a few weeks ago and then failed to start (one time) when the power button was pressed. It's been at an Authorised Repairer for a week; however, they can't replicate the problem. I bet if I bring it home it will turn off within the hour!
iMac G5, MacBook Mac OS X (10.4.9) 1GB RAM, iSight

Similar Messages

Grounding (power) problems Imac 21.5"

Does anyone else have this problem with their intel Imac? I am hoping that under my applecare I will get a new computer or a repair. I use my computer for audio at my recording studio and have always used Mac's but this one had me stumped until I found more people that were finding "digital Hash" (digital noise) being recorded with audio signal.
I tore my studio apart only to find it was the computer that was the problem.

What I found was this. When I hooked up my Imac to a mixer via a Steinberg MR816 interface I got what I've seen described as "digital Hash". The sound of the computer processing was being recorded along with the signal I intended to record. I went through a lengthy process of checking each piece of equipment on it's own and in combination. Eventually I plugged a 1/4" cable into my interface and simply touched other equipment (on their metal chasis) to see which piece would generate this noise and create a ground loop. It made the noise with each piece of equipment I touched that had it's own power source and ground. It made the noise even if I touched a screw on my powered monitors. It did not make the noise if I simply plugged in an unpowered instrument like a guitar.
Everything was always plugged into one electrical outlet. I tried 6 different grounded outlets. If I plugged the Imac into a power bar which was not grounded the noise was gone and all the equipment sounded as it should. The Imac was the problem and it was the last place I looked.
But I only knocked out the ground for a moment as I do not wish to run the Imac ungrounded.

Wifi problem: I have a airport wifi the small one with one port for modem. My Problem is airport wifi works fine however when I power off my IMac then power it up later on It does not show a connection I then have to manual do it my self it's a pain and n

I have a airport wifi the small one with one port for modem. My Problem is airport wifi works fine however when I power off my IMac then power it up later on It does not show a connection I then have to manual do it my self it's a pain and never happened before I have tried resetting the airport unit but still no luck please help.
Thank you
Roy from malden

Hi Roy, this has worked for a few...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7 & 10.8…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

IMac And Firewire Solo - Power Problem

Hi!
I got an iMac and a M-audio Firewire Solo audio interface. I wanted this interface to be powered by the current adaptor and NOT by the iMac.
M-audio says that if I plug it with a 6pin cable the computer will power the interface (not using the adaptor). So Can I avoid iMac to power the interface? I mean by stopping the firewire power or something..
thanks!!!

The easiest way would probably be to put a pair of 6 pin to 4 pin adaptors (of opposite "genders") into the cable run, or to use a 6 pin to 4 pin cable with a single 4 to 6 pin adaptor on the end of it, vivajam. THis should cut the power supply from the Mac to the device.
http://www.granitedigital.com/catalog/pg20_firewiregenderadapters.htm seem to have the sort of thying you would need.
Cheers
Rod

1st gen. iMac G5 power supply failure

Hi, all!
My 20" iMac G5 here at work collapsed and died on me about a week ago. The computer just deactivated abruptly; I actually had thought that I had kicked the plug or stepped on the power bar by mistake. I restarted it, and it worked for twenty minutes before dying again. Now it's entirely unresponsive. Having read up on the matter here and in the Mac support pages, I'm quite sure the power supply has failed. I'm in the process of finding out whether the computer is still covered under Apple's Repair Extension Program. (http://www.apple.com/support/imac/repairextensionprogram/ - I know the iMac model is correct, my serial number matches the range, I'm just not sure if the computer is less than three years old.)
Anyway, the important thing for me is the hard drive, not the machine itself. We're entirely Mac-based here at work, so there is no shortage of machines for me to work on (I've already replaced my old machine with a much newer Intel-based iMac), but I would very much like to retrieve my data from my old hard disk. I've downloaded the DIY guide for opening the 20" iMac G5 and removing the hard drive, but I need some advice on the best plan of action. Should I then open another, working G5, remove its hard drive, insert my old hard drive and transfer my files off to my new iMac through our company server? Or is there another way to approach it? Is the hard drive on my 20" first gen G5 compatible with newer mac models, or am I going to run into problems with connectors, physical disk size, etc.? Or, should I just leave well enough alone and leave the entire operation to a Mac Genius?
This will be my first time opening an iMac. I believe that I can open the machines and remove-replace the hard drives without voiding any warranties, correct?
Thanks so much in advance for your help and advice!
Adam

I am on the phone right now with a product specialist about my iMac G5 power supply issues. Kind of ***** because he has, in so many words, said that the Genius is the Alpha and Omega and can extend the 3 year coverage. For me that is great except that the Apple store is over an hour away. I don't understand why the dude on the phone can't pull the switch and make it happen as well.
Factor in:
Unplugging iMac G5 and all peripherals
Loading it in the car
Driving an hour
Carrying it into the Mall (apple store)
Waiting for my Genius appointment
More than likely getting it fixed for free (from the sounds of things)
Driving back after it is fixed
Doing everything listed in reverse.
Would it just be easier to pay the $108 for a new power supply, wait a few days, undo some screws, and BAM! it works again?
Update. Off the phone now. The product specialist flexed his muscles, back handed the Genius to gain authority, and basically stated that they WILL DEFINITELY repair either the power supply or the logic board or both if needed. I have already had them replace the logic board once. BUT, I still have to load it up and take it to the Apple Store. Boo.

Frozen iMac with Network problems

I have a 21.5 inch iMac purchased around Nov'12. Three days ago, suddenly no web page could be opened. I thought it to be a problem of my router but when I found out that I was able to use the Internet perfectly from my MacBook, I restarted my iMac but the problem remained. I shut it down & then restarted it... Now it showed only a white screen with the Apple logo on it and the waiting symbol. This remained till hours until I got irritated and switched off the power supply. I switched on the next consecutive days but the problem persisted. Today fortunately my iMac started.. The home screen has come... It is able to recognise my wifi & Ethernet but does not open any web page. Going to system preferences and then to Networks is hanging the system preferences window. When I force quit it, it says to file a report to Apple.... But the problem doesn't get solved... I always believed Apple as a company whose products never hanged up or faced hardware or software issues!!!

Hello,
If 10.7.0 or later...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions, reboot.
If you still have problems, this has worked for a few...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7 & 10.8…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
10.4 instructions...
Is that Interface dragged to the top of Network>Show:>Network Port Configurations.
If using Wifi/Airport...
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6/10.7/10.8, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
Click OK.

What is the technical 'cause' of the infamous iMac black screen problem?

Can anybody shed some light on what technical malfunction exactly causes the infamous iMac black screen problem? The common solution seems to be a logic board replacement. But what exactly is broken on the logic board? Is it the Geforce chip? Some kind of external driver circuitry? Or something completely different?

I was referring to the many problems also described in this thread (and also in many other places):
http://discussions.apple.com/thread.jspa?threadID=196774&tstart=0
In specific I am referring to machines where all of this applies:
- internal monitor stays black after power-on
- computer boots normally
- external display works normally
- internal display backlight works and can be adjusted in brightness, but all pixels are black
- PRAM reset doesn't help
- NVRAM reset doesn't help
- PMU reset doesn't help
- reinstalling OS / booting from CD doesn't help
- machines with this problem sent to repair come back with a replaced logic board
I'm looking for more information on the technical cause of the exact problem as stated above. So I can attempt to repair my iMac

I want to upgrade my ( iMAC 800Mhz Power PC G4 & iBOOK 700Mhz PC G3)

Hello!
I want to upgrade if possible over 1GB ? my now slow computer ( iMAC 800Mhz Power PC G4 ) and a ( iBOOK 700Mhz Power PC G3 ) which I don't think I'm confident enough to change the internal memory but the user memory I think I can attempt!
So I'd like to know what type of ram or "model numbers" I should be looking for if I what to upgrade my empty DIMMO /J22 slot to a 1GB ?
Keeping in mind I still have a 256GB factory standard ram in place (256 SDRAM PC133U-333)
i.e. how many pins "184 0r 200" do I need for for my model?
I seen lots off ram types like "Kingston PC2700, 333MHZ DDR 1GB memory "
PC2700 333MHZ is this the model number I should be looking for to upgrade to 1.256?
and for my ( iBOOK 700Mhz Power PC G3 ) is this also able to be upgraded to beyond the the original ibook specs just like it is suggested for the iMAC? which I also have only the original 256 SDRAM and a empty ram slot! again I not sure what model or type of ram I should be looking for here? or what is the max. it can be upgraded to with the new high density ram everyone is talking about!
I know you guy's must seem to answer these by now simple question for you! am sorry I don't have something more challenging for you but I do need your help with this one please!
since you've already done this and seem to know what your doing! I would like to ask for your help or anyone who know the answers to my questions ?
Thank you in advance!
Millenniumbug

Unfortunatley, only imac models above 1ghz can take module of 1GB. your model can accomadate 512mb bringing it up to 768Mb which will make a decent improvement.
go to crucial.com and input your imac model to get the right type for your system. it's also best to buy from mac friendly companies as some cheaper modules wont work
best of luck

I have an iMac4.1 and my iPhoto is very slow and the thumbnails correspond to the wrong pictures. How do I fix this? Or is my iMac too old? Will getting a new iMac solve this problem?.

I have an iMac4.1 and my iPhoto is very slow and the thumbnails correspond to the wrong pictures. How do I fix this? Or is my iMac too old? Will getting a new iMac solve this problem?
I realize is only 512MB of memory but I want to make sure that a new iMac will solve this problem. Can the new iPhoto handle 10GB or more of photos? Or do I have to go to Picasa anyways in which case I can buy any computer to do that?

The model of Mac is not partcularly relevant, it's the version of the OS and iPhoto that matter.
iPhoto - since 2006 - is good for 250,000 images.
Regards
TD

MacBook Pro Power Problems.

My MacBook Pro is exhibiting power problems. I am running Yosemite and it seems that the problem may have arisen since I dowloaded this upgrade. When the battery is charged it shows 99% charge and I can use it on battery power. As normal with use the charge gradually reduces, say to 30%. I then switch off using either the on/off button/apple logo, waiting for the dialogue box, " do you want to switch off etc". The next day, I switch on, but the computer will only boot up when the power lead is attached. When the computer comes on, usually as normal, the charge always shows 0%. When it is recharged the whole process repeats itself. Help please.

Hi,
Thanks for responding. My MBP is late 2009 and the battery has never been replaced. When I look at battery condition, it registers as normal, as it does when I do the power checks you suggested. When I plug in the power cord it glows green and within a few seconds it is on amber, until fully charged. I've done the SMC reset. I noticed this morning that after using it last night the battery capacity was 93% and an expected duration of about 5.5 hours was listed. After limited use this morning, restricted to email admin only, the charge level had dropped to 88%, but the predicted duration was only 2.75 hours. Currently the level is 73% and the duration is 3 hours, although I have accessed the web several times. Presumably there is some sort of algorithm that looks at current usage and predicts the duration. I will continue to monitor this to see what happens. In the meantime if you have any more thoughts!!!
Regards
Roger

Hard Disk or Power Problem

I have a Powerbook that I have had for many years now. Recently it hasn't been booting up. I hit the start button and it chimes like it usually does but the screen and hard disk don't do anything. Sometimes it does boot up but it doesn't start easily. When it does boot sometime freezes when I go through the login and when loading the desktop but once the desktop is loaded it works fine until it goes to sleep. I just bought a new battery for it this summer. I have been reading though the Discussions and I figure my computer is either having power problems when starting up or I need a new hard disk. Any thoughts?

You will find step by step directions at iFixit. Note that your computer does not have the EMI finger referred to in the directions. Also, be especially careful with the tiny screws in the sides on the computer. You don't want to strip the heads or it will be very difficult to get them out. Here are few tips you may find helpful:
• Print out the ifixit directions as well as the screw guide ahead of time.
• Be sure you have the right tools. You don't want to damage the screw heads or you may never get them out. And the Torx screw driver is critical. For a spudge I use the handle of an old toothbrush (choose one made of hard plastic), cut off the brush and beveled the handle end like a flat blade screw driver). For some spudge jobs a credit card will do the trick.
• Click on the pages of each step which involved removing screws to enlarge, then print out the pages. Poke holes in the paper where the screws were removed, poke the screws in the holes and stack the pages in order in which there were removed. Reassembling is a lot easier. No cups to tip over and spill. No guessing. Each screw is exactly in the right place. You can use an ice cube tray, egg carton, dixie cups etc. I previously used small medicine cups one for the screws in each step. I nested them so that the last ones out and the first to go back in are on top. (Some users report cutting up the screw guide and placing the applicable section in each container.)
• Be very careful pulling out leads. Hold the lead as close to the plug as possible and wiggle (the plug ) to loosen its grip. Don’t hold the wires and pull as that can damage the cable, or worse, in some instances pull the wires out of the plug. Indeed, some users have pulled the socket off the logic board! Use needle nose pliers or tweezers if you can access the plug, or nudge the plug with a small instrument to help loosen its grip.
• Use force gently in removing parts. Separating upper and lower case takes some doing. Use a plastic tool (spudge) so as not to leave marks.
• Refer to the screw guide when reassembling computer. Putting longer screws in the wrong place can perforate the circuit board.
So will I be able to put the OS and everything on by the installation discs?
Yes you will. Indeed you may be able to clone the contents of your current HDD to the new HDD by placing the drive in a firewire enclosure and formatting and cloning the new drive before installing it in the computer. If you have data you need to backup and have a sound installation on your current HDD this might be an option to consider.
When you get your new HDD it will need to be formatted before you can install the OS on it. If you need directions for formatting and installation, I can post step by step directions here for you. Let me know.
Good luck.
cornelius

Power Problems - MacBook Pro

My MacBook Pro is exhibiting power problems. I am running Yosemite and it seems that the problem may have arisen since I dowloaded this upgrade. When the battery is charged it shows 99% charge and I can use it on battery power. As normal with use the charge gradually reduces, say to 30%. I then switch off using either the on/off button/apple logo, waiting for the dialogue box, " do you want to switch off etc". The next day, I switch on, but the computer will only boot up when the power lead is attached. When the computer comes on, usually as normal, the charge always shows 0%. When it is recharged the whole process repeats itself. Help please.

Howdy rcoo26,
It sounds like there’s an issue turning your MacBook Pro on when it isn’t connected to power, and the battery doesn’t seem to be holding a charge. The article below provides information that can help you troubleshoot the battery in your notebook.
Mac notebooks: All about batteries - Apple Support
If there isn’t an issue with the battery, try the general troubleshooting tips in this article:
If your Mac won't turn on - Apple Support
Cheers,
-Jason

My bookmarks are lost after turning off the computer unexpectedly (power problem),how can it recovers?

My bookmarks are lost after turning off the computer unexpectedly (power problem),how can it recovers？ Thanks a lot !!!!
我的书签在电脑突然被断电之后全部丢失了，我该怎么办呢？？谢谢啦！！~~~~

This can also be a problem with the file places.sqlite that stores the bookmarks and the history.
* http://kb.mozillazine.org/Locked_or_damaged_places.sqlite
* http://kb.mozillazine.org/Lost_bookmarks

Intermittent power problem Canon 5D Mark iii

My Canon 5D Mark iii (2 years old) has an intermittent power problem, as described below. It may simply be a question of cleaning the terminals that the battery connects to. I haven’t tried since I can’t reach them at the bottom of the battery compartment.
Details as follows:
this is a recent problem in the last 3 weeks
the problem occurs with all three Canon batteries that I use
from time to time when the power is on, the camera suddenly loses all power and displays an “empty” battery image
sometimes it happens of its own accord while no demand is being placed on the camera
but more usually it occurs at the moment of focusing (I use back focus on the * button)
it is often fixed by turning the power off and then on again. This fixes it half the time
it is always fixed by turning the power off, removing and then re-inserting the battery
needless to say this is very annoying!
Since coming back from a trip, while transferring images from the camera to my computer, I noticed that the (almost) full battery started showing “empty”.
The transfer was completed successfully, and when the camera was disconnected from the computer, the battery showed that it had lots of charge left. Very puzzling!

It sounds like either the battery terminals aren't getting a solid contact or there's a fault (something loose or grounding out) inside the camera. But if something were genuinely loose or grounding out inside the camera, then power cycling or even re-inserting batteries would probably not fix it -- which makes me suspect it's still something outside the camera.
Are any of the batteries new, or are they all about the same age as the camera?
Batteries only last a few years but it'll depend on how they were used. In other words if all three were used about the same and enough charge cycles to be at the end of their reliable life... it might be time to replace them.
It's difficult for the internal battery terminals to get dirty unless the battery itself had something on the battery iteself when you inserted it. You can try a bit of denatured alcohol on a cotton swap to reach in and clean the terminals. Also, inspect the batteries to make sure they're all clean.
Tim Campbell
5D II, 5D III, 60Da

Hi i have iMac G5 Power PC with dead logic board,when i turn it on screen is dead. Is it possible to recover data off it by hooking up via firewire to my newer G5 3.06Ghz with IntelCore

Kia ora, hi i have an older (2003 or 4) iMac G5 Power PC 2GHZ - when i turn it on the screen stays dead but the light below screen comes on & i can hear fan (after a few mins on the fan gets noisy).I think the logic board may be dead & can not afford new one & I would like to recover some files & stuff from it and have heard you can recover stuff using a firewire cable so i got cable (firewire 400 to 800) but i am unsure how exactly to do it.
Can anyone out there please explain how i might do it
Thankyou very much
ps my first post on mac forums so hope i got it right

You can remove the hard drive from the iMac and put it in an external enclosure. You could try using Target Disk Mode to transfer data. Click on the blue link to get the instructions on how to transfer the data.

IMac G5 Power Problem

Similar Messages

Maybe you are looking for