Apple has recently acknowledged the higher than normal failure rate of some version of iMacs and has extended the warranty coverage for a set of machines produced between April 2004 and June 2005.
From Apple:
Overview
The eMac REP for Video and Power Issues covers eMac (USB 2.0) computers within the serial number range noted below that exhibit one of the following video- or power-related symptoms as a result of a specific component failure:
- Scrambled or distorted video
- No video
- No power
- Intermittent system freezes or crashes
- System crashes during the startup process
The program covers affected eMacs for up to three years from the original date of purchase. Apple will continue to evaluate the repair data and will provide further repair extensions as needed.
Affected Products
The program is available for certain eMac (USB 2.0) models that were sold between approximately April 2004 and June 2005 featuring 1GHz and 1.25GHz G4 processors.
The affected eMac computers have serial numbers where the first five (5) digits fall into the ranges noted below:
G8412xxxxxx - G8520xxxxxx
YM412xxxxxx - YM520xxxxxx
VM414xxxxxx - VM518xxxxxx
If you have any questions about a machine that might be eligible for this program we can help figure out if the machine is indeed eligible, and can facilitate getting the repair performed.