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My G5 imac, will NOT turn on. And all elec cords and power, have been checked.

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Most likely its the power supply or the video on the mainboard. It is a cheap capacitor issue that was addressed. Warranties were extended. If you have an apple store near you and your unit is less than 4 years old you may qualify for free repair or replacement. You could call apple to find out for sure but sometimes the apple stores will just do it out of loyalty.

If you go to the apple web site search support for G5 imac and there are some troubleshooting tips.

Posted on May 14, 2010

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1 Answer

Will not start


check power supply. try different outlet with extension cord. wiggle cord to see if it is shorted, try different power cord, most likely it is an IBM style power cord and any one will work.

Jan 13, 2014 | Apple iMac G5 Desktop

1 Answer

My imac g5 wont turn on at all! what can i do?


First, you should make sure you you have power to the iMac. Next if you checked you don't have power the iMac and you do, you could bring it to an Apple Store near you so they can diagnose it. Note, " I pretty sure they could diagnose it." Then if they know what the problem is, you could buy the parts needed from sites that have them and replace the faulty parts. You might be able to find how to replace the parts on www.iFixit.com. If this isn't what you are looking for you should probably clarify your qustion because the question has tons of possibilities. Hopefully this can help!!!!
Note: The Apple Store people might be able to fix the iMac for a price.
Mr Fixya533

Feb 07, 2011 | Apple iMac G5 Desktop

1 Answer

Power mac g5 shows terrible damage in tower from leaking they swear mom board is fine but its hard to believe. are any of the other parts usable for a g3 to g5 imac or g4 powermac or emac


None of the parts are usable in any other machine.
The coolant from a liquid-cooled G5 PowerMac is toxic. If your G5 is leaking, disconnect the power cord IMMEDIATELY. Flush any skin exposed to the fluid with water for at least 15 minutes.
If you want to glove up and extract your hard drive from the machine so as to save your data, do it carefully. Other than that, my recommendation is to bag up the unit and handle it responsibly as toxic waste, using the same guidelines your area uses for antifreeze.

Oct 31, 2010 | Apple iMac G4 Desktop

1 Answer

Apple 20 in Imac G5 turn on for about 40 second and shut it down itself .. please help


Sounds like you need to reset your SMU and NVRAM:

To reset your SMU:
  1. Turn off the computer by choosing Shut Down from the Apple menu, or by holding the power button until the computer turns off.
  2. Unplug all cables from the computer, including the power cord.
  3. Wait 10 seconds.
  4. Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer.
  5. Let go of the power button.
  6. Press the power button once more to start up your iMac.

To reset your NVRAM:

  1. Shut down the computer.
  2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
  3. Turn on the computer.
  4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
  5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
  6. Release the keys.
If those don't resolve the issue, your computer will probably need service. Good luck!

Oct 10, 2010 | Apple iMac G5 Desktop

1 Answer

G5 keeps powering up for a few mins then switches off?


Thank you for contacting Fixya Support, I am glad to assist.

There are a few steps you can try to troubleshoot this issue:

Try a PMU Reset:
* Turn of your iMac if it is already turned off
* Disconnect all connections to the iMac except the power cord
* Now disconnect the power cord for approximately 20 seconds
* Reconnect just the power cable the keyboard, mouse and power cord, and then power your iMac G5 up.

* Check to see if the iMac boots up normally without power interruption.

* If the iMac G5 shuts off again, try these steps, another recommendation would be to remove all connections including the power cord, and lay the iMac G5 on soft cloth face down and with a philips screwdriver, remove the plate on the bottom of the iMac G5 where your RAM memory is located.
Before removing the RAM however, touch your hand on the metal boot to discharge any static current you carry for approximately 5 seconds.

Now remove each RAM card and then reseat (re-install) each card.

Restore the RAM card cover with your Philips screwdriver, reconnect your power cable, keyboard an
d mouse and turn on your iMac G5.

See if this second procedure helps if the first procedure does not work.

Let me know if this helps.

Regards

-Mactechtrainer

Sep 11, 2010 | Apple iMac G5 Desktop

1 Answer

All of a sudden, my iMAC wont turn on.. Any suggestions???


It is best to check with an Apple store, assuming there is one within 100 miles or so, especially if you are under AppleCare, yet--unlikely. My 20" iMac G5 gave up the ghost a year ago. Their cost to repair/replace the logic board was >$800. I've heard 3rd party as low as ~$500. I decide to change to an MacBook 13" (Early 2009 white, then current) and love its convenience.
Try the Macintosh boards where I have posted http://discussions.apple.com/category.jspa?categoryID=134 "Apple - Support - Discussions - iMac G5". No luck for me though. If you have the early G5 that I have, pull power plug and any cables, place face on non-scratching surface, rotate 1/2(?) turn the 3 screws on the bottom, lift off the back and stand, use the power cord to try to start it. There is a button for this but varies with models. If only one LED lights or 2 for a short time you may have my problem. First, after the back is off check if the capacitor tops are bulging. If so that is a known repair, but its coverage expired.
-Ken

Apr 11, 2010 | Apple iMac G5 Desktop

4 Answers

17" iMac quit working



Your Imac may be one of those affected by Apples purchase of inferior capacitators from Taiwan. If you are less than 3 years from the purchase date, apple will repair the problem for you for free. Just take the unit to your nearest local Apple Genius or tech. If you are outside of the repair extension guidelines, I have provided a link here which can show you or someone more skilled how to repair the problem. Ordering a new motherboard and power supply will set you back a lot of money, however the following guide and pdf give you step by step instructions on how to ressurrect your dead imac without speding more than $100.00. I was able to repair my imac using this guide and it was worth it to save a $2k computer that was only 3 1/2 years old. Check it out:

the following information (in italics and bold)  is taken directly from: http://www.jimwarholic.com/2008/07/how-to-repair-apple-imac-g5.php.  (this site is complete with instructions, manual and the full compliment of materials available at an extremely affordable and fair price. I took a chance and repaired my own, it is not as hard as it sounds1)

The iMac G5 Repair Extension Program for Video and Power Issues applies to first generation iMac G5 computers that have video or power-related issues as a result of a specific component failure. If your iMac G5 is exhibiting any of the symptoms listed below and your computer's serial number is within the noted ranges, your computer may be eligible for repair, free of charge. If Apple or an Apple Authorized Service Provider (AASP) determines that your iMac G5 computer is eligible as part of the program, the repair will be covered by Apple for up to three years from the original date of purchase even if your iMac G5 is out of warranty.

This is a worldwide Apple program.
Affected systems will exhibit one of the following video- or power-related symptoms:
Scrambled or distorted video 
No video 
No power 
Note: If your iMac G5 is not experiencing any of these symptoms, you do not have to contact Apple or any Apple Authorized Service Provider.

Which iMac G5 computers are affected by the iMac G5 Repair Extension Program for Video and Power Issues? 
The program is available for certain first generation iMac G5 models that were sold between approximately September 2004 and June 2005 featuring 17- and 20-inch displays with 1.6GHz and 1.8GHz G5 processors.

The affected iMac G5 computers have serial numbers where the first 5 digits fall into the ranges noted below.

Serial Number ranges:
W8435xxxxxx - W8522xxxxxx 
QP435xxxxxx - QP522xxxxxx 
CK435xxxxxx - CK522xxxxxx 
YD435xxxxxx - YD522xxxxxx 
Some second generation iMac G5 computers have serial numbers that fall within the upper band of the ranges listed below. Only first generation iMac G5 computers are affected by this program.


Where do I find the serial number of my iMac G5?
The 11-digit serial number is located on a label under the foot of the iMac G5. There is a bar code underneath the serial number.
To view the label, hold the sides of the iMac and gently lay the computer face down on a soft, clean towel or cloth.



Is the iMac G5 Repair Extension program available for other Apple computers? 


This program applies only to the systems noted in this FAQ. Other versions of the iMac G5 line are not part of this program. Click here for more information on how to identify iMac G5 models

Free guide for how to repair the motherboard capacitors, rescue the hard drive and more.

http://www.jimwarholic.com/docs/Repairing-Apple-iMac-G5-Motherboard.pdf

Feb 22, 2009 | Apple (661-2795) for iMac Motherboard

1 Answer

Imac g5 is so noisy


Fan sometimes get stuck on, I won't bore you with the technical details as to why or the terminal command to fix. Just do this...
Shut down. Unplug the power cord from the back of the tower. Wait 15 minutes and plug it back in. Power up, it should have reset it.
The fans are "smart", some of them are designed to run only as needed, sometimes they get a little tangled up in their own underwear.

Feb 01, 2009 | Apple iMac G5 Desktop

2 Answers

IMac G5


you need to contact apple support for the same

Jun 23, 2008 | Apple iMac G5 Desktop

1 Answer

Won't power up


1) remove all external , leaving only keyboard anf mouse.
2) turn power on and press and leave mouse depress until any cd are out from cd bay
Main boadr is ok but system canot be loaded due to a corrupted os x load

if u have original cd please insert

1) remove power cord to De-enegize system
2) plug power cord back and press power buttom insert Mac Osx Labeled Install CD ,Press Comand-C to boot from CD

Nov 29, 2007 | Apple iMac G5 Desktop

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