I have an mx-950 that communicates with an msc-400. It has worked for years. Today it stopped sending commands even though everything on the remote appears to be working. If I connect the 950 to my programming pc and test the remote, it works. If I press the corresponding button on the remote it doesn't work. I've tried factory resets and redownloading the program file but still the same.

I'm sure nobody has ever had this experience but hopefully someone can save me from spending hundreds of dollars replacing the remote. Oh, and the battery is fully charged.