I bought a DM800 a couple of days ago. If I unplug the box from mains and I re-plug it, it will not start. I have to try plugin-unplugins about 10 times to make it start. More specifically:
If you unplug the box and then you re-plug it will not start, no matter how long you wait (I've waited for over 1 minute). You have to "power-cycle" the box several times -maybe 10- to make it start.
I have noticed that when it fails to start it may (sometimes it happens, sometimes not) light up a few lines of the OLED display for a fraction of a second. Moreover, I believe that it may have to do with high temperature caused from the box when it operates. If you unplug it and let it cool off for say half an hour, then when you connect it to power it starts immediately most of the times. I am not sure though about the last observation, because I have done limited testing (tried it twice).
In my opinion THIS IS A DESIGN OR PRODUCTION PROBLEM AND MUST BE DEALT WITH IMMEDIATELY, especially for a costly receiver as the DM800.
I would very much like to hear an official response from Dream Multimedia.
Thank you.