Were u in a specific menu when things went black?
as mentioned by catbrat There is a factory reset command that will put it back to its out of the box settings except it won't reset any firmware upgrades. U will have to reset it up from scratch tho (source input names and input audio settings, channel levels, distance, eq, etc. U might wait until Monday and call denon support.
What is your video input source (dvr/DVD/etc.) and how is it connected (hdmi?). How is it connected to your display (hdmi?).
U r positive your tv is on the correct source?
