I watched it too it is the power btton.... i took 7 screwsa out there is a flimsy cheap piece of rubber holding the exterior power button if it comes lose or there is crud around the frame inside it sticks it took me ten minutes.... SAMSUNG was useless ..all they could say was you have to buy a new phone its out of warranty for 24 minutes or send us a hundred bucks we will fix it.... no more flashing logo it totally is the power button