updated 01:15 pm EDT, Tue September 5, 2006
"Random" MacBook shutdowns
An IT engineer in Munich, Germany claims to have solved the problem of random shutdowns experienced by some MacBook owners. The issue apparently stems from the cable between the heat sensor and the CPU's heat sink, which is reportedly too short. The notebook's heat sink expands during operation, according to the engineer, and comes in contact with the sensor cable melting through the cable's insulation. Once the protective outer layers of the cable melt away, the cable touches the heat sink which causes a short circuit, resulting in an immediate shutdown. As the heat sink cools it contracts and loses contact with the cable, allowing users to once again boot their MacBooks until the processor heats up again. MacBook owners may not have to exchange the motherboard or memory if the discovered phenomenon proves to be the issue causing the random shutdowns.