Yet another possibility is that the remote has forgotten which receiver it's supposed to be controlling.
I don't understand exactly what you mean by "controlling the RCVR button." Do you mean "controlling the receiver after I've pushed the RCVR button"? I doubt that there's a remote that will actually control the button on your remote named "RCVR."
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
