Question about Apple Power Mac G5 Desktop

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IMac won't power up

Dear Mr. Krabby,
I've checked this site for a response 5 times daily or more since I posted my iMac problem Saturday November1, 2008. Nothing as yet. I'd like some advice, please, if you're willing to share. Have already taken my iMac in for repair which I've been told is the power source. I've got no knowledge base- could you please help. In addition, "guest" has the same problem. You could get a two-fer if you're so inclined. :)

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  • 4 more comments 
  • OldMa Nov 17, 2008

    Hi thejohnsonn

    My iMac is a flat panel G5 . Hope the clarification helps.

  • Mary Anne Drobnak
    Mary Anne Drobnak Dec 13, 2008

    This is grandma nerd. Did you try the APPLE WEBSITE. CLICK ON SUPPORT. Click on name of your computer. Type problem in SEARCH. Hope this helps.

  • OldMa Dec 26, 2008

    Hello grandma, not sure exactly what you wanted me to do with Apple support. In the original problem I wasn't able to power up my computer, so any tech support was unavailable to me by nature of the problem itself. I appreciate you taking the time to try to help, though. Thanks.

  • Loteck May 11, 2010

    When you say "power source" I assume you mean "power supply". I don't know how difficult this is to repair on your model but, as with all iMacs, it is probably not easy. Sorry, but you may have to pay to have it done. No easy fix for this one.


  • thejohnsonsn May 11, 2010

    I cant find your origional post whats the issue no power??? power no video ?

  • thejohnsonsn May 11, 2010

    Forgive me i cant find your origional post what model Imac is this ?? Old berry style crt type or flat panel??

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It's time to contact Apple,com. Click on Support. Then click on computer type. Next type your problem in the seach box.

Apple will ask you to set up a password.

Their discussion forum is very helpful. You get this thru SUPPORT.

Posted on Dec 16, 2008

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My Imac A1058 won't start up only the fans work


Never heard of before, though power there.

Guess, try holding the on/of switch in a little longer, some systems act as reboot/reinstall

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My old blueberry iMac won't come on. I've changed power cords and tried different keyboards. No lights come on. Could it be the power supply? If so, where do I get one and how easy to install?


This is usually due to the BIOS/Clock/CMOS battery dying. If the battery is dead, it won't start up at all.
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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.
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Feb 07, 2011 | 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

Just recently started shutting down intermitantly?


This is a common problem with Imac G5's caused by failing capacitors on the logic board and/or power supply.

It is fixable, but requires very good soldering/electronics skills. Otherwise the typical response from service people would be: needs new logic board and/or power supply.

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IMac G3 Not Starting


Hey, RexKing:

Your problem is hard to diagnose with your current description without knowing where the clicking sound is coming from or exactly what it sounds like, but most likely the problem resides either with the power supply or its connection to the circuit boards. If you have access to any scrapped G3 iMacs to cannibalize for parts at an E-recycling depot, you can probably find just about anything you need, as long as you get the right model, as they changed key components a few times, but, like cars, a lot of parts cross over. The exact model description is on the bottom in really fine print.

In any case, you will have to take it apart to check out the power supply and/or other components, which is a bit tricky without a guide. You can find a really comprehensive Apple iMac G3 service document, for many of the later models, posted at this URL as an 11 Mb PDF file:

http://www.scribd.com/doc/103447/iMac-G3-Disassembly-Guide?autodown=pdf

Only catch is that to download it you need to sign up for a free SCRIBD account. (It's a document sharing co-op site.) Hopefully this won't result in years of spam. Good luck, and if you figure out the cause, please let me know. (I have about a dozen iMac G3s that I am gradually refurbishing.)

Ciao 4 nao
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1 Answer

Clarification request


Next time for any older model Apple portables including the MacMINI that no longer has its AppleCare has major issues and need to be fixed, and you have a small knowledge of how to follow instructions and use a screw driver then you should go to ifixit.com. They have the part that you would need and as a bonus to you when you order from them is they send you the how to remove old and replace with new. Step by Step with precise information and so you don't get totally lost in type there is an image to each step. The person who made that site sure did do a great and helpful job. And the instructions to do any of the jobs that is needed is given to all for FREE. You don't need to buy anything from them or give them any info for the free info. ((this is for anyone that might think i am punting for them-which i am-and they don't know i am)) < and i don't get squat from em but the same information you get >

Nov 17, 2008 | Apple iMac G5 Desktop

1 Answer

IMac clarification


Okay, you probably need a new power supply, this unit had many power supply and logic board problems.  300.00 is a lot for a power supply, 120.00 is the usual cost plus 50.00 labour, and that is canadian dollars, it should be much cheaper if you are in the U.S.

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