So here's the deal. I got this Toshiba Laptop its a Satellite L875D-S7320, It has a AMD a6 in it for a cpu. A customer brought it in to us because it was shutting off randomly. We noticed that the CPU fan and fins were clogged. We cleaned those out and applied new grease to the cpu. Weirdly enough, the cpu was still getting hot. Here's the strange part, the part of the copper heatpipe that touches the CPU seems to feel hot (too hot) but if i follow the heatpipe down to the fan, it's cold (even the fan blows cold air), It gets hot enough that thermal shutdown occurs and it just shuts off. The CPU and the part of the heatsink that touches it gets HOT! (burns finger) before it shuts off. Isn't the part of the heatsink that sits by the fan supposed to get hot also if the CPU is hot? I'm thinking maybe the heatsink is at fault... What do you guys think? I had ordered another heatsink to replace this one. Also i have tried to just take the fan out of the equation, and the end with the fins still does not get warm. I'm definitely thinking the part of the heatsink that brings the heat over to the fan is faulty somewhere.