Stan, using my voltage meter on the suspect "bad" remote I get 5.7 volts powered off; and 5.6 volts when powered on. Does that tell you anything, or what else do I need to do?
Junior: that is interesting. Both of my newer DCS remotes (less than 2 years old) have what I think they call "lazy thumbwheel" - means that the speed increments don't change as they should when rolling thumbwheel. How do you get the remote apart? I am now wondering if its a defective on/off button?