My macbook fan has been super noisy for about a month and a half now. I checked with smcfancontrol and the speed was completely normal. This last week its been starting up with a fan speed of 0rpm and gradually builds up to 2100 but it will no longer go past this. I took it to an apple store and they confirmed the fan must be replaced, but I don't have the money to pay them for it. I am going to be replacing it myself and have done my research and know I am capable of doing it. I have not yet decided whether I will buy the fan off ebay or off powerbookmedic.com, but I notice I can buy the fan assembly (fan and housing) or fan assembly with heatsink. What should I buy? Should I just replace the fan or should I go ahead and replace the heatsink while I'm at it?