Report "According to the instruction manual, the on & off switch is the knob and the switch in the back is only for the night light. Is this correct? When we turn the knob and plug it in, nothing happens. The indicator light does not appear and there is no clicking noise when you turn the knob to indicate if it is on or off (according to the manual, it should make a click noise to indicate if you've turned it all the way off). I just bought it yesterday so I want to know if it's defective"