I have had a power surge come through my HDMI cord into my RCA 5.1 Dvd/Tuner Home Theater Systems box via the other end of the HDMI cord that was plugged into a Roku box that was powered by a 12v cord with a 5v dc when the 12v cord universal generic charger should've been 5v max and this made my RCA Dvd player unit lose everything electric light's/functions except for the red stand by light. Once I push power the red light goes off and there's no sound of life and if I try to push power again no red light just nothing unless I unplug the unit plug it back in red stand by light comes back on but will go off if I push power.