My DHP-309AV PowerLine AV 500 Mini Adapter has been functioning fine until today.  It lost connectivity between the incoming router side and the remote side.  After I unplugged the incoming side, let the unit cool and replugged it, there were NO LIGHTS.  Thus no signal was being transmitted or received and no power was seen.  I have switched units to see if that changed anything.  Unfortunately No.  Does this mean the unit has failed completely?
Thanks, Alan