View Full Version : Where can I buy Mac parts in Sydney ?

14th April 2005, 08:50 PM
Hi, can anyone tell me the best place to find parts for my old Macs in Sydney (preferably North) ?
The PSU on my G4/400 needs replacing, and I also need a flyback transformer for a slot-load iMac.

(Or advise me if I can repair the PSU? It's not completely dead but the trickle voltage is reading 0.5v when it should be 5v)

14th April 2005, 09:08 PM
See if a service centre will sell you the parts, although probably not likely. Surely worth trying.

Sounds like to me you know what your doing. But getting parts can be difficult, as I am sure you already know.

Being certified for portables/desktops is good, but cause I don't work for a service provider it means I still can't order parts no more. When I did work for one, I could order parts on the account of the service provider, although TAC would still get stroppy if you didn't do something to the Apple OZ standard. *damn I can't believe how much I hated doing that job for our field techs*

14th April 2005, 09:42 PM
AFAIK the only way the AppleCentre will sell you one is if you get them to replace the PSU, due to Apple policy. You'd have a better chance either posting in the Trading section of this forum or trying eBay. :)

14th April 2005, 11:32 PM
Thanks LCGuy.
That was what I was afraid of. I just wondered if there was any other source. (like one of the second hand places.
btw, whatever happened to microseconds?)

15th April 2005, 07:15 AM

15th April 2005, 07:20 AM

Any other stores for second hand macs and parts?

15th April 2005, 09:10 AM
If you're feeling a little technical, a standard ATX power supply can be modded to work with a Sawtooth G4. The pinouts are slightly different, but easily done.

This XLR8 link (http://www.xlr8yourmac.com/systems/ATX_G4_AGP_conversion/G4_AGP_to_ATX_case.htm) is a good place to start, or Googling "sawtooth and atx" gives a good few links as well.


edit: Actually this site (http://www.outofspec.com/frankenmac/wire.shtml) is the best, and simplest description.

16th April 2005, 12:15 AM
Thanks to both Currawong and Byrd.
I had looked for microseconds some time ago, as my bookmark no longer worked, and it appeared they had disappeared, but thankfully that must have just been some temporary downtime.

I think I might try the 'foreign' ATX power supply solution. Thanks for that tip. I'll report back and tell you how I went. :)

16th April 2005, 02:04 AM
The only real downside to modding a regular PSU for use in a Mac is if you need 28V for ADC. Without the need for 28V, it's a simple solder job (once you have matched voltages and pins) on the motherboard plug.

Finding one that fits in the tower case can be fun, too. If you locate one, you might need to cut out part of the rear case panel for the plugs.

16th April 2005, 03:26 AM
Originally posted by Edge@Apr 16 2005, 02:04 AM
The only real downside to modding a regular PSU for use in a Mac is if you need 28V for ADC.
Fortunately for my model (G4/400) the 28V is not required. (according to the XLR8yourmac article (http://www.xlr8yourmac.com/systems/ATX_G4_AGP_conversion/G4_AGP_to_ATX_case.htm) )
My only query with the info there is:
What is a 'standard PC ATX Power Supply' ?
I see them advertised at a whole range of wattages.

My guess is they mean 230W which is about what the G4/400 PSU is rated at.
Should I go for higher? (300W maybe ?)

16th April 2005, 05:01 AM
The higher the power rating the better. As long as the voltage is the same you'll be fine.

16th April 2005, 09:00 AM
I'd be more concerned about getting a quality ATX PSU. The cheaper ones don't give consistent power under load. Thankfully, Sawtooth motherboards and CPU's don't pull as much current as their PC counterparts, so 3-400W should be fine.

7th May 2005, 02:26 AM
Just an update.

I bought a basic ATX power supply (around $80) and followed the instructions linked earlier.
I found I had to attach new connectors for the fan connections.(the G4/400 has a single pair (black & yellow) where the ATX has 4 (2 black 2 yellow) and I noticed the ATX didn't have an EMI supressor on the main bundle of wires like the Apple PSU has, so I thought I'd play it safe and added a Clam-shell ferrite (http://dseau.resultspage.com/search.php?p=R&srid=S24&lbc=dseau&w=ferrite&url=http%3a%2f%2fwww%2edse%2ecom%2eau%2fcgi%2dbin% 2fdse%2estorefront%2f%5fsessionid%5f%2fProduct%2fV iew%2fR5122&rk=2&uid=224123210&sid=2&ts=p2&sessionid=427b9b390bf50694273fc0a87f9c071f&method=and) of about the same shape and size size.

I ran the computer for a couple of weeks before daring to re-install my audio interface cards and have run it a further week with them in and , touch wood, everything seems just fine.

I didn't want to report success immediately, so as not to jinx the result, but I feel fairly comfortable now that it has been successful. :)

So thank-you to everyone who pointed me in the right direction :D

7th May 2005, 09:32 AM
Well done oink, sounds like it's all worked well. You've probably got a much better PSU for $80 than anything that Apple would have as replacement - they're usually fairly generic ones.