CS fan problem


Aug 20, 2009
My mom just sent me a vaio cs115d from japan last month. And most of the times i get to hear a noisy sound from the air vent like a motor running inside, but sometimes the fan runs smoothly. I was bothered by its behavior, that's why i called the service center of sony here inthe Philippines and they told me that they are not accepting vaio that are not bought here in the Philippines. I am really bothered because i think that it might cause my cpu to overheat because the fan is not functioning well. And i am thinking opening it but i cant find any link that can give me guide on how to disassemble it. can anyone please help me??? I also dont know where i can buy a new fan for replacement, is it really necessary? please help me...