iMac G5 from October 2004: the cursed serie, another report

Another report from Aubert:

I am typing this message from an iMacG5 17" from October 2004, featuring a dying graphic cards... I am not sure if I will be able to finish this message! In addition this iMac is making quite some noise (constant active fans) which unexplained extremely noisy peaks. Temperature monitor is displaying CPU probe constantly over 52C even when the CPU load is zero...with performance setting: Auto or Low.
I have received a second iMacG5 at home, a 20" model. This one is extremely silent, and the CPU temperature is hardly going over 35C under normal usage, and reaches 45C under heavy CPU loading (performance setting: Auto or Low).
On the 17" model, the problem with the graphic card started after I left the computer running overnight. On the morning, fans were at full speed, and the computer itself was hot...but not crashed. This is only after rebooting that I got the scratched apple logo.

Every week we are receiving one or more reports from users owning an defect iMacG5 from October 2004. To our point of view, it is quite clear that at least part of the production series from October 2004 is defect. A problem which was identified and solved quickly afterwards since most of the problems are identified with iMac G5 from October 2004, not later.
In addition, the poor owners have to wait from 2 to 3 weeks to get the motherboard of their iMac exchanged...