Find the heat source.. Get a dual-use thermal camera. Become the louis rossmann of the N900 community! https://www.youtube.com/watch?v=FLSO0D67lOA#t=01m45s If you get one you can help check where Leste is loosing the 80ma of sleep/idle current. [So it is dual-use technology. Because it has to be split your framerate will be low.] (your finger tip might work as well, propably not for 80ma)