Currently Being ModeratedJun 30, 2013 11:28 AM (in response to cawcaw)
If you disconnect all the internal drives, does the Optical then work fine?
Currently Being ModeratedJul 1, 2013 12:09 PM (in response to cawcaw)
All my PowerMac G5s have had at least one replacement optical drive. One has had four... In all cases, the first hint of a problem was incorrect reads (or no read) of known good CD/DVDs. I've been told that it has to do with plastic lenses and laser light but that's only hearsay.
I've gotten most of mine from Other World Computing, though I've gotten a couple from Amazon when I knew the exact model.