At
http://www.channelmasterstore.com , find the CM3000A user manual. Yes I know , figures 3 , 4 , 5 show the power injector connections One connection of the power injector goes to the tv and is labled as such. The point is , just the CM3000A and all of it's connections , connected correctly , the the one converter box and the converter box connected to the tv. No other tv's connected. Come on Now , you are and will have to think it through.