I had to take the top off of the changer in order to extract a dvd which was stuck in position 2. The read out on the screen said "ROOT". The unit was on when I started. I disconeected all the plug ins in the back and the unit went dark. After taking the top off the unit I extracted the dvd. Then I put the plugins back into their slots (I think I got them in their previous slots). However the unit is not lighting up and has no power to it. Any ideas?