Question about Apple iMac G5 Desktop

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Clarification request Hi again, thejohnsonsn, My original post indicated that my 3 year old iMac began to intermittently power down by itself. After a couple of months of me finding it off rather than in sleep mode, one evening it just wouldn't power back up. I ran through the usual plug/ electricity checks which didn't show anything untoward. Beyond that I don't have any expertise. By the time Krabby responded I had taken the iMac to a local computer shop. Although he agreed with the diagnosis of a bad power source, he felt that the cost was too high. Nothing I could do about that, I was basically a hostage to the repair. In any event, the iMac is up and running well. Anything else I can answer for you ? Thanks, Ma

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  • thejohnsonsn May 11, 2010

    whats the serial # please

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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 >

Posted on Feb 12, 2009

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Thanks for contacting FixYa Support.

I have repaired numerous iMac G5 17" models for a while now and because I have, I can tell you just from the symptoms you have described, this is potentially a power supply issue.

However, the iMac G5 17" have been known to have swollen capacitors, which can also ultimately impact the power management / performance of your iMac.

If you are able to, very carefully and don't touch them, you can look on the iMac's main logic board to see if you notice any swollen capacitors. If you are not sure what a capacitor looks like, they look like mini batteries connected to the board.

Should you do this and find that the capacitors are ok, then I would recommend for sure, that you look into replacing the power supply.

For your model of iMac 17" provided it is not an Intel-based iMac, the part number you will need to source is part# 661-3627. Below, I have also provided the most inexpensive price for this iMac power supply per this link:
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You may find even lower prices for this iMac 17" power supply, if you search online further, but this is one of the better online Apple components vendors. Therefore you should be able to see and compare the prices on this website, with some of the other vendors
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I hope this helps. If you have any more questions on this subject, simply reply back to this post.

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Ciao 4 nao
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http://search.info.apple.com/index.html?q=imac%20g5%20reset%20pram&lr=lang_en&search=Go&type=

http://search.info.apple.com/index.html?q=imac+g5+reset+smu&type=&search=Search&lr=lang_en&search=Go

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