Hi Larry
I am grateful to this forum for all I learned about this engine and other important things, so want to post something really relevant that because of the lack of knowledge can lead other members easily to mistakes and perhaps spoiling engines and other important part of train parts.
You see, after dissembling my engine again putting apart both cards the new and the old, I assemble it again this time following the diagram TRW gently shared. Fortunately the violet wire cable addressed in the diagram was in the right position. However, when I attempted to place sound card back by screwing it to the chassis I note that a sort of round threaded nut fastened to the card frame was loose and can not fix it properly so postponed its installation. So ran the engine alone with the new LCRU1 card only. It performed great in conventional mode I mean Frw / Neutral / Rev .
When running it in command mode, was able to addressed it with #1 ; run fwd /rev turn lights on and off. However I couldn't get it to run forward or reverse but just a very few feet, it stopped and made a hum noise just as before that I changed the LCRU1 card. Although I could get it along the full layout on conventional mode one minute before. I can tell at first, this was certainly disappointing and thought had not made any real progress at all changing the LCRU1. I have many other engines most of them PostWar from 1950's and a couple Lionchief and these all perform very good until I got this engine which is actually my first TMCC / Legacy engine, Then I believed found the right answer for this trouble; it is summarized in this video made by Lionel on 2011 about the TMCC /Legacy signal interference, here below find the link to it:
https://www.youtube.com/watch?...-hiIvPxVs&t=746s
The interference on the TMCC signal coming from accessories, adjacent track sections placed just too close to each other. Because these all share a common AC-ground which is connected to the Base-1L or Base-2 from where the TMCC / Legacy signal is generated. This interference stops the engine and switch it to conventional mode, the real cause for the erratic running trouble I had.
I just wanted to share this link and make other mates aware about this interference issue for fixing it properly rather than changing cards and sending engines to service when they are OK.
ARTURO
