IMac G5 behaving erratically!

Earlier this year, my iMac G5 (Power pc) melted down. The logic board was gone, and I was quoted a $1200 fee to repair. The computer was just over 3 years old. I contacted Apple, who agreed to pay for the repairs.
My question relates to my sister and her husband's iMac G5 (intel), which they bought on my recommendation in April of this year. Unbeknownst to me, they had their machine into the shop this summer and paid a $300 repair for a hardware malfunction. (not sure what) Of course, this was just after the one year warranty expired. They are now experiencing a lot of freezes and generally screwed up behaviour with their computer and have asked my advice. Which was to take it into the shop and find out what's wrong and then contact Apple.
What I would like to know from the discussion group is if there are a lot of known hardware problems with this generation of the iMac G5, as there certainly was with the one I bought.
The technician who is servicing my sister's computer has run a diagnostic program, and has found nothing wrong, and so is suggesting a 'software problem.' I am skeptical given my experience.
Any suggestions would be much appreciated.
thanks.

"iMac G5 (intel)"
No such computer. iMac G5 & the Intel iMacs are 2 different models.
Suggest that you re-post over on the Intel-based iMac Forums.

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IMac G5 behaving erratic

My iMac G5 has been working well for about 5 months. Recently it began not waking from sleep mode without a reboot. Also, when you reboot, the behavior is erratic. Sometimes it works OK for an hour or two and other times the screen freezes or only half the screen shows up,
Have all the latest software updates for 10.4.6. Have tried running disk utility and repairing permissions.
Any suggestions as to next steps? Would you suggest an OS10.4 reinstall?

Hi, Dave.
As far as general iMac G5 troubleshooting goes:
1. See if your computer's serial number is in the range specified in the "iMac G5 Repair Extension Program for Video and Power Issues" document.
2. Rule out potential hardware problems. Run the Apple Hardware Test that came with the computer. Instructions for doing so will be found in the hardcopy manual that accompanied your computer. For additional details, see my "Apple Hardware Test" FAQ.
3. Check the diagnostic LEDs, a feature of your iMac G5. See "About the iMac G5 diagnostic LEDs."
4. If your iMac G5 will not turn on, see "iMac G5: Troubleshooting when your computer won't turn on."
5. See also the iMac Service & Support site.
6. Check the iMac G5 Discussions for similar reports from other users.
7. As a general check, run the procedure specified in my "Resolving Disk, Permission, and Cache Corruption" FAQ. Perform the steps therein in the order specified.
8. If you are seeing the following message
that indicates a kernel panic.
If so, see my "Resolving Kernel Panics" FAQ. This FAQ includes step-by-step instructions for identifying and resolving some of the most common causes of kernel panics. The FAQ is a roadmap: start at the beginning and work systematically through the end, i.e. the "If all else fails..." section.
9. If the computer is either under warranty or covered by an AppleCare Protection Plan, don't hesitate to take advantage of your warranty and contact AppleCare.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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chanmm
chanmm
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Exact model would be helpful
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var Resources_txt_y:Tween;
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IMac G5 behaving erratically!

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