If Apple will not work with you I would contact DT&T services in Calif. You would be looking at $250-$350 depending on your model for a logic board installed + shipping. See the following link.
I checked on the iFixit site and they do not carry the logic boards. But they do carry the Power Supplies. A power supply will run about $150 with you installing.
If Apple will not work with you I would contact DT&T services in Calif. You would be looking at $250-$350 depending on your model for a logic board installed + shipping. See the following link.
http://www.dttservice.com/iMacg5.html
I checked on the iFixit site and they do not carry the logic boards. But they do carry the Power Supplies. A power supply will run about $150 with you installing.
http://www.ifixit.com/search/model?query=G5+iMac#0
The replacement instructions are posted at iFixit.com and depends on if you have ALS or iSight on which one you use.