I have fresh batteries in the remote. I have power with lights on the Legacy command base. I have track power on (18V) measured by meter. I have two Legacy equipped locomotives, one steam, one diesel with programming and ID set in the Legacy system. Both engines are in Run mode. Both engines are making the basic sounds at "idle".
With that background, neither engine responds in any way to the Remote with either engine selected. I know about the engine Power button on the remote, equivalent to the "Boost" key in old TMCC, but still no response. I am out of ideas and looking for your ideas about things to try to make this work. It used to work until the power supply to the base failed and was replaced. This failure wiped out the engine IDs and I used the engine specific orange modules to rebuild the engine info.
What else to look for or try - this may well be user error, but what error? Thanks,