I dont know what happened. We came home one night and the power had gone out. the next morning, the reciever wont power up. It has two power buttons, one allows power to flow through the reciever, the other actually turns the unit on. It has power flowing through it, but the unit wont turn on when i press the button. I have tried unplugging it for a while to see if anything resets, but so far nothing is working. I'm thinking im gonna have to take it into circuit city where i bought it to get it fixed. Maybe somebody out there knows something about harmon kardon and can tell me whats wrong. thanks in advance for any help