I have a Lionel Santa Fe F3 A-B, 6-18130 and matching dummy A, 6-18134 I bought NIB this year. I just bought a TMCC command base for my DCS system and programmed the locomotive. The powered A unit and and the dummy A unit responded to the base, the B unit did not. It didn't matter if the switch under the dummy B unit was in run or program it would not respond to the command base. I swapped the LCRX between the dummy A unit and the dummy B unit. Now the dummy B unit responds to the command base and the dummy a unit does not. So I assume that the LCRX that was originally in the dummy B unit is defective. Is there a way to test the LCRX to see what is wrong or do i just need to find a replacement LCRX? I have the defective LCRX in the dummy A unit for now. That way I have functioning Railsounds from the dummy B unit in command mode. I'd like to fix the LCRX in the dummy A unit so the directional lights and electro-coupler work.
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