I tried a new 12V 5amps switching PSU. I have got a USB Dongle which I cannot unplug as it serves as a streaming buffer. It does it all the same. First the picture freezes. Box is unpingable. After a while front LED turns red and the frozen picture turns to black on TV. I am searching for the latest drivers. Maybe those will help. Checked out with some local DM520 friends and this seems to be a common issue. Only that most of them had sent their boxes back to Germany before warranty expired. Hope I can get to grips on this. Any help would be appreciated.