This is a matter of choice. I go for as soon as possible, usually level four or five.
it depends on the level + is this waw or black ops because you should just roam around until you find it. there super easy
you kill all the zombies genuis!!
you open the door upstairs and go to the power room it should be on the wall
In the room with the power box.
It's a perk you pick up from specific zombies when you kill (the power must be on )
it is on the stage. once you open the door to the stage, go to the big red curtain and follow it to the other side of the room. then you will see a power box with a switch. that's it.
Keep opening doors until you get to the theater. In the theater there is a lever which turns on the power.
turn on the power on the stage if you are playing kino der toton
There is one main power switch on each map.
if the map is kino der toten zombies the power is in the theater by the curtains behind the teleporter
the stage
On the Five level of zombies you must activate the power in the basement. From there activate the defcon levels on the second floor (two on bottom, three on walkway) and take any portal into the new room and the door will open when zombies are ready to eat your brains.