I just replaced the right and left fans in my A1211 Macbook Pro, went pretty well, my only issue was on the connection of the right fan cable to the logic board. When I connected it, it seemed to come off too easily, but I could not get a better fit. Now that I am finished and turned on the computer, I am worried that the fan is not spinning. Does anyone know if I can safely open up the computer again and then turn on the computer safely so that I can view if the fan is moving? Or, is there another way to check if the fan is moving? When I put my ear up to the left fan, I can hear the slight sound of the spinning, but on the left side, I can't hear anything.