Hi, yesterday somehing strange happens with my z2. When i finisihed seeing a movie, i press the onoff on remote to shut down the projetor, but it only respondes to first click, when i click again to confirm, nothing happens. Try directly in projector, same thing happens. Have to cut power to shut down. Later, turn the projector on and it was good, it power off normally. Anynone know what may cause this?