EDIT: can someone help me and see if it can be reproduced on other 15" MBPs as well? To obtain the result, follow these steps: 1. download smcFanControl 2. crank up the fans to the max 3. move the MBP up and down and tilt it sideways 4. observe if a grinding noise can be heard 5. lower the fans to default speed 6. observe if a clicking noise can be heard. That's what it sounds like: --- So my 2 week old late 2016 MBP 15" started developing a weird grinding sound coming from its right fan. Of course it's 1 day past the end of the return period (there is no holiday season extended return period in Switzerland). It can only be heard when at the lowest speed (2000 rpm) and it sounds as if a part of the fan is brushing against something inside the case. If I move the MacBook around (upside down etc) or if I push on the top or bottom of the case, the sound varies. Sometimes it stops, and it can go days without showing up. If I raise the fan speed using smcFanControl, the grinding noise goes away, but then it's replaced by... well, loud fan noise. Not a solution either. Bummer. I guess I'll need to have a Genius replace my right fan. Has anyone experienced something similar yet?