Since a couple of days I own the S4 MK3. Love the design and it's really nice to work with, but once in a while something strange happends. While mixing the S4 randomly turns off for 1 second before turning on again. It does not happen very often, but today was the second time that the S4 stopped working. Therefore I started to become a bit worried. First I thought that it might be a loose power cable or usb connector, but everything fits good. Does somebody know what the issue might be?