I'm not sure if this is a recall or not, but I was looking into this exact error tonight for a neighbor, and found it odd that so many people had complained about the exact same problem - all around the same time. Well, I guess we got really lucky with our timing, because Apple has announced "eMac Repair Extension Program for Video and Power Issues":
http://www.apple.com/support/emac/repairextensionprogram/
"If Apple or an Apple Authorized Service Provider (AASP) determines that your eMac computer is eligible as part of the program, the repair will be covered by Apple for up to three years from the original date of purchase even if your eMac is out of warranty. This is a worldwide Apple program."
" The affected eMac computers have serial numbers where the first 5 digits fall into the ranges noted below.
Serial Number ranges:
* G8412xxxxxx - G8520xxxxxx
* YM412xxxxxx - YM520xxxxxx
* VM440xxxxxx - VM516xxxxxx"
PowerMac G5 Mac OS X (10.4.6)