07-10-2011, 05:28 AM

Hello Mac Forums.

I've got a Power Mac G5 Dual 1.8 GHz with 3 GB running 10.5.8.

It's a 2006 PPC machine, but with a new hard drive fitted about 18 month ago. I had issues with crashes and freezes for awhile, nothing specific. It could happen straight after login, opening iTunes, working on Illustrator or making music on Live. So after trying everything with Disk Utility I decided to back everything up and reinstall Tiger. Resolved the issues for 3 months; everything was running fine.

I turned the machine on yesterday morning and all I got was the Apple Chime and a screen full of flickering white noise. It's definately not the monitor, and I get the same result when trying to boot from the OS disc and startup in safe mode.

Any ideas?

Thanks in advance.

07-10-2011, 08:05 AM

Try running Apple Hardware Test from original install DVD 1 (or maybe #2).

07-10-2011, 08:21 AM

I am not that familiar with these machines but have read a number of posts on this forum about aging problems with the G5.
Does it have the water-cooled CPUs? If so, this is fairly common from what I have read and from a practical/cost standpoint means it's time to look for a new/used Mac.

Definitely worth investigating further to make sure it's not some other (readily fixable) issue. I would do as recommended and also do a forum search for G5 threads and check out ifixit for repair info.

http://www.ifixit.com/

07-10-2011, 06:36 PM

Well a 1.8GHz G5 is not liquid cooled so that is one problem solved. Have you got those original install discs to run Apple Hardware Test in extended mode? This checks logic board and graphics where the problem seems to be coming from.