Power Mac G5 wont boot

tcbluejayfan · tcbluejayfan #1 (**permalink**)

05-22-2011, 07:37 AM

I bought a used Power Mac G5 1.6 yesterday, and was told that it worked. When I got it home, what happens is i push the power button and the white light comes on, the fans momentarily start for less than a second and then everything goes away. I have an unformatted hd inside because the previous owner kept his hard drive.

tcbluejayfan · tcbluejayfan #2 (**permalink**)

05-22-2011, 08:12 AM

Im wondering if it is a logic board or power supply issue. Ive tried different memory in it, and get the same result.

tcbluejayfan · tcbluejayfan #3 (**permalink**)

05-22-2011, 09:10 AM

going to try a new PRAM battery this afternoon, because the previous owner said it was bad

tcbluejayfan · tcbluejayfan #4 (**permalink**)

05-22-2011, 09:28 AM

after finding a good PRAM battery, that does not appear to be the issue. So, about every third time i push the power button the come with for a fraction of a second start to "whirr" but then stops. Nothing is coming up on the screen.

baggss · baggss #5 (**permalink**)

05-22-2011, 12:33 PM

Check and make sure the RAM is properly installed. If it looks good the odds are it's the motherboard.

tcbluejayfan · tcbluejayfan #6 (**permalink**)

05-22-2011, 01:55 PM

the Ram is good because i tested it in another system.

baggss · baggss #7 (**permalink**)

05-22-2011, 05:28 PM

Then it's likely the MB. It could be the power supply I suppose....

Frankly, it's not worth the money to fix it.

harryb2448 · harryb2448 #8 (**permalink**)

05-22-2011, 05:44 PM

Yes power supply at a guess and 1.6GHz G5, the first release of the G5 range, were a terrible machine which Apple quickly updated. Trust you did not pay more than say $40.00 for it. Shame you did not do a search of the threads first:-

pc to mac.. now back to pc.. my g5 1.6 biggest headache!

tcbluejayfan · tcbluejayfan #9 (**permalink**)

05-22-2011, 06:05 PM

well you cant always do research first. i paid $50, so i guess ill just part it out, and sell the 4gb of Apple RAM that was in it, and try and get something for the rest.

robduckyworth · robduckyworth #10 (**permalink**)

05-22-2011, 06:49 PM

you wont get anything for it other than the RAM. there is quite a good community of case modders who love the G5 case, and are struggling to get their hands on one. I'd look online for some forums.

harryb2448 #8 (permalink)
Member Since: Nov 28, 2007 Location: Nambucca Heads Australia Posts: 14,074 Mac Specs: iMac i5 2.7GHz OS X.8.3	05-22-2011, 05:44 PM Yes power supply at a guess and 1.6GHz G5, the first release of the G5 range, were a terrible machine which Apple quickly updated. Trust you did not pay more than say $40.00 for it. Shame you did not do a search of the threads first:- pc to mac.. now back to pc.. my g5 1.6 biggest headache! *Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!*
	QUOTE Thanks

robduckyworth #10 (permalink)
Member Since: Jan 04, 2011 Location: Reading, UK Posts: 2,972 Mac Specs: 15" MBP, 2.5GHz i7, 750GB, 6770M 1GB, iPad 3, iPhone 4, custom PC	05-22-2011, 06:49 PM you wont get anything for it other than the RAM. there is quite a good community of case modders who love the G5 case, and are struggling to get their hands on one. I'd look online for some forums. If you find a post helpful, don't forget to use the reputation system (top right of post.) Join us in the IRC! How? Add me on Steam, Origin or PSN (Vita): robduckyworth
	QUOTE Thanks

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tcbluejayfan #1 (permalink)
Member Since: Feb 19, 2009 Posts: 51	05-22-2011, 07:37 AM I bought a used Power Mac G5 1.6 yesterday, and was told that it worked. When I got it home, what happens is i push the power button and the white light comes on, the fans momentarily start for less than a second and then everything goes away. I have an unformatted hd inside because the previous owner kept his hard drive.
	QUOTE Thanks

tcbluejayfan #2 (permalink)
Member Since: Feb 19, 2009 Posts: 51	05-22-2011, 08:12 AM Im wondering if it is a logic board or power supply issue. Ive tried different memory in it, and get the same result.
	QUOTE Thanks

tcbluejayfan #4 (permalink)
Member Since: Feb 19, 2009 Posts: 51	05-22-2011, 09:28 AM after finding a good PRAM battery, that does not appear to be the issue. So, about every third time i push the power button the come with for a fraction of a second start to "whirr" but then stops. Nothing is coming up on the screen.
	QUOTE Thanks

baggss #5 (permalink)
Member Since: Oct 10, 2004 Location: Margaritaville Posts: 10,306 Mac Specs: 27" 3.4 Ghz i7 iMac-13" C2D Macbook-OSX 18.8.2-64Gb iPad 2-32 Gb iPhone 5-ATV 2-14Tb of Storage	05-22-2011, 12:33 PM Check and make sure the RAM is properly installed. If it looks good the odds are it's the motherboard.
	QUOTE Thanks

tcbluejayfan #6 (permalink)
Member Since: Feb 19, 2009 Posts: 51	05-22-2011, 01:55 PM the Ram is good because i tested it in another system.
	QUOTE Thanks

baggss #7 (permalink)
Member Since: Oct 10, 2004 Location: Margaritaville Posts: 10,306 Mac Specs: 27" 3.4 Ghz i7 iMac-13" C2D Macbook-OSX 18.8.2-64Gb iPad 2-32 Gb iPhone 5-ATV 2-14Tb of Storage	05-22-2011, 05:28 PM Then it's likely the MB. It could be the power supply I suppose.... Frankly, it's not worth the money to fix it.
	QUOTE Thanks

tcbluejayfan #9 (permalink)
Member Since: Feb 19, 2009 Posts: 51	05-22-2011, 06:05 PM well you cant always do research first. i paid $50, so i guess ill just part it out, and sell the 4gb of Apple RAM that was in it, and try and get something for the rest.
	QUOTE Thanks

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