A cable television diagnostic method for a cable television network sends a polling message to a plurality of television set top boxes from a cable television headend; wherein the polling message instructs the cable television set top boxes to obtain at least one operational parameter of each of the television set top boxes; receiving a plurality of response messages from the cable television set top boxes, each containing the at least one operational parameter; determining that one of the operational parameters is outside of a specified range of values; and aggregating the operational parameters of the plurality of set top boxes to determine if the same operational parameter is outside the range of specified values for more than the one of the television set top boxes.