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Fix or Replace 1GHz G4 [message #338933] Wed, 08 March 2017 16:34 Go to next message
nick.rhind is currently offline  nick.rhind
Messages: 2
Registered: March 2017
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Junior Member
I have a 1GHz mirrored-door G4 (M8689) that I need to run a piece of legacy
lab equipment. It boots up fine and seems to run well, but after several
minutes the monitor turns off and, a few moments later, the computer shuts
down. For what it is worth, the fan has been running constantly for the
past few months. If anyone has any advice about how to repair the poor old
thing, I would greatly appreciate it. If not, suggestions for a good
source for a replacement would be useful. My online searches have not but
fruitful.

Thanks,
Nick

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Re: Fix or Replace 1GHz G4 [message #338940 is a reply to message #338933] Wed, 08 March 2017 17:26 Go to previous messageGo to next message
Mike K. is currently offline  Mike K.
Messages: 19
Registered: March 2016
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Junior Member
* nick.rhind wrote on 2017-03-08 21:34 +0000:
> I have a 1GHz mirrored-door G4 (M8689) that I need to run a piece of
> legacy lab equipment. It boots up fine and seems to run well, but
> after several minutes the monitor turns off and, a few moments later,
> the computer shuts down. For what it is worth, the fan has been
> running constantly for the past few months. If anyone has any advice
> about how to repair the poor old thing, I would greatly appreciate it.

I had a similar problem several years ago with a 'Pismo' PowerBook G3 --
it would freeze up when left idling for more than 10 seconds. It
performed just fine otherwise. It sounds like maybe this is something
like what you're experiencing.

Since I didn't want to spend money on new parts, I used a little
freeware app called "Jiggler" to simulate mouse movement. It's
freeware: <http://www.sticksoftware.com/software/Jiggler.html>.

I never did diagnose the issue with the Pismo, and only used it for
several months before recycling it, so I wouldn't recommend it as a
long-term solution. It may work as a stopgap until you can get the
machine replaced.

> If not, suggestions for a good source for a replacement would be
> useful. My online searches have not but fruitful.

Given it's not clear exactly what's causing the issue, and the age of
the machine, it's probably more economical to buy a replacement than try
to diagnose and source parts.

I checked UK eBay, and there are quite a few G4s floating around on
there for reasonable prices; there are also higher spec G4s, including
dual 1.25GHz machines, quite cheap. I imagine you could find a
replacement machine on your own eBay. LEM Swap might also be a good
shout -- you might even get one free for shipping.

Hope that helps.

--
Mike | <http://koralatov.com>
* 15" 'Penryn' MacBook Pro 2.66 * 27" 'Lynnfield' iMac 2.66 *
* 20" iMac G4 * 'Key Lime' iBook G3 466 * G4 Cube 500 *

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Re: Fix or Replace 1GHz G4 [message #342277 is a reply to message #338933] Thu, 20 April 2017 08:27 Go to previous messageGo to next message
JoeTaxpayer is currently offline  JoeTaxpayer
Messages: 16
Registered: August 2012
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Junior Member
The G4 was great, but in my case, the power supplies died, and 4 G4s went
to Mac heaven.

I'd check if the G5 can handle the SW you're concerned about. This was my
solution, and the G5 was easily found at a reasonable price. In my case, it
was a Video capture device that needed Leopard. And the G5 was less than
$200. You do need to make the leap to Sata drives, but they are very cheap,
and the migration, easy.

On Wednesday, March 8, 2017 at 4:41:23 PM UTC-5, nick.rhind wrote:
>
> I have a 1GHz mirrored-door G4 (M8689) that I need to run a piece of
> legacy lab equipment. It boots up fine and seems to run well, but after
> several minutes the monitor turns off and, a few moments later, the
> computer shuts down. For what it is worth, the fan has been running
> constantly for the past few months. If anyone has any advice about how to
> repair the poor old thing, I would greatly appreciate it. If not,
> suggestions for a good source for a replacement would be useful. My online
> searches have not but fruitful.
>
> Thanks,
> Nick
>

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Re: Fix or Replace 1GHz G4 [message #342283 is a reply to message #342277] Sat, 22 April 2017 16:47 Go to previous message
Charles Lenington[1] is currently offline  Charles Lenington[1]
Messages: 15
Registered: October 2016
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Junior Member
On 4/20/17 7:27 AM, JoeTaxpayer wrote:
> The G4 was great, but in my case, the power supplies died, and 4 G4s
> went to Mac heaven.
>

Did you try the pc atx power supply hack?

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