RJR posted:VArodder, A "sound file" in on board a loco. It is not only sounds, but the entire operating software. A corrupt file in one loco shouldn't affect any other loco.
That makes sense. Since none of them respond I suspect the problem is with DCS. I have two TIUs and two remotes so I would think at least one combination would work. I’m setting up a separate test track today to see what happens.