Abstract: A television receiver signal blocking system is provided which includes a television receiver, a television signal source and a television signal blocking mechanism therebetween. The television signal blocking mechanism includes a box from which electrical conductors are connected to the television receiver in a signal source, such as a television cable. Within the television signal blocking mechanism or box is a rotatable matching member which includes a latching arm and a switch carrying arm. The latching member is rotatable between three positions which permit the television signal blocking box to be opened to gain access to its interior while cutting off or blocking the signal; a second position in which the box is latched closed and the signal is not blocked; and a third position in which the box is closed and the signal is blocked.