I was playing around with my V3 and found that if you have it set to shut down after so many minutes, it plays a death song before it shuts down. The song plays when you go into menu, then down to configure, then to battery, then to auto power off must be checked, then go right below it to inactive limit. This is the amount of time that the machine will have before it plays the song and shuts down if it is not used. I set mine to one minute and waited just to test it and I heard the song play.