on no, my 17" g5/imac 2.0v2 is getting jiggy on me!

[robfilms]

so here's the situation:

17" g5 imac 2.0 v2/10.4.7/9mos old refurb from online apple store

i keep my imac running almost all the time. when not in use, i put the machine to sleep.

three times in the last 4 weeks, i've come back to my desk to find the machine off, there is no slow blinking light on the lower right corner designating the machine is asleep. there is nothing.

when i attempt to wake the machine, the screen does not light but the rear upper fans do start to blow. when i continue to try to wake the machine, all i get are the fans blowing.

i have attempted to control-apple-escape to force quit but nothing appears on the screen.

i have to unplug the machine from the wall socket, then re-boot. when i re-boot, i do get the "happy bong" and there are no alerts or dialogue boxes explaining the shut down.

anyone want to be kind enough to venture a guess as to what might be going on and how i can either ascertain the nature of the problem or suggest a solution to my travails?

up until now, i have been VERY happy with this machine.

thanks in advance to any and all who care to share.

be well

rob

[Ken Sp.]

It might be part of the extended Coverage here
http://www.apple.com/support/imac/repair...onprogram/
Since it is only 9 months old--It is covered.
There is a good online diagnosis for iMacs
Go here--and click on the "Troubleshooting Assistant"
http://docs.info.apple.com/article.html?artnum=86812

Reset SMU http://docs.info.apple.com/article.html?artnum=301733

[blusubaru]

What do you have external wise hooked into it? That could have something to do with the sleep issue.

[robfilms]

often i have several external hard drives via the fw

but lately, i have had ONLY the printer via usb and a lexar 6-1 card reader via usb. the keybd/mouse is also usb.

all of these 3 shutdowns have happened w/o any of the ext hard drives.

any other thoughts?

thanks again for sharing

be well

rob

[blusubaru]

Call Apple. You're under warranty. Did you do that video card hack that we talked about a while ago? If so you may want to undo that before sending it back or taking it in.

[ka jowct]

Disconnect the card reader.