No, interestingly, that does not always happen. From the fact that it will go happily for weeks at a time I do not really suspect the battery though I really should test it.
Thanks for the input
Severin

On 19/06/2009, at 4:40 PM, Daniel Kerr wrote:

Hi Severin

Does the time also revert to 1907, or 1940 or something like that? If so, then I wouldn't be surprised if it's the little internal battery. If it hasn't been replace for a while (3-5 years) then that can do strange things
to do with startup as well.
That's normally one of the easiest things to replace to test,..and the
cheapest. :o) (Well one of the cheapest).

Depending if it's a slot load or a tray load, you can refine the google search for "changing battery in an iMac G3" to "changing battery in an iMac
G3 slot/tray load" depending on which it is :o)
<http://www.google.com/search?client=safari&rls=en-us&q=changing+battery+in+
iMac+G3&ie=UTF-8&oe=UTF-8>

Hope that helps.

Kind Regards
Daniel


On 19/6/09 10:22 AM, "Ronda Brown" <ro...@wn.com.au> wrote:


On 19/06/2009, at 10:05 AM, Severin Crisp wrote:

My wife's trusty G3 iMac exhibits a minor quirk.  On occasion the
power button does nothing and the machine will not switch on.  This
happens in two circumstances, either at a normal switch on or at a
restart after doing an installation when it shuts down and will not
restart.  In either situation the cure is to unplug the power cord
from the back of the case and plug it back in again - and then the
button functions as it should.  The power cable is a good snug
positive fit and visually I see no reason to suspect a bad contact.
I suspect it is something to do with the power management unit, I
assume the G3 iMac has one of these.
This is only an occasional fault and easily fixed but is annoying
and I would like to know the explanation.
I realise that one response may be that I buy my wife a nice new
computer!
Severin Crisp


Hi Severin,

Buy your wife a new computer ;-)
But then the old iMac's are great, I have one sitting in my computer
room, I can't bear getting rid of it.

Seriously though ... it could be the PMU
It's a little button that you have to press with a blunt object
(pencil). If you are unsure where it is & how to reset the PMU, have a
look at this:
<http://mrjcd.com/junk/PMU.jpg>

Cheers,
Ronni

17" MacBook Pro Intel Core 2 Duo
2.4 GHz / 4GB / 800MHz / 500GB
OS X 10.5.7


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________________________________________________________
                   Assoc Professor R Severin Crisp, FIP, CPhys, FAIP
       15 Thomas St, Mount Clarence, Albany, 6330, Western Australia.
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                            email  mailto:sevcr...@westnet.com.au
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