Apple has launched a PowerBook G4 memory slot repair extension program that offers free repairs for customers who purchased eligible PowerBooks which display certain symptoms, even if the notebook warranty has expired. Customers who purchased a PowerBook G4 15-inch 1.67/1.5GHz model that was manufactured between approximately January 2005 and April 2005, displaying serial numbers between W8503xxxxxx and W8518xxxxxx are eligible for the program. The symptoms which may only occur intermittently include failure to start up--typically followed by three beeps and the sleep LED flashing periodically--, only one SO-DIMM memory slot recognizes the memory installed when both memory slots are populated, and degraded system performance due to the recognition of only one memory chip.
An Apple technical support representative or an Apple Authorized Service Provider (AASP) will need to troubleshoot the computer to determine if the component failure identified for the repair extension program affects the machine and, if so, arrange for the repair.