Dale Manquen documented the output circuit of the Legacy base years ago, see below. I don't see how most happenings on the track would be a factor here, there is no continuity for large transients to affect the base. Also, I truthfully have not heard any issues with track transients killing the command base.
@jpcanton posted:The wire from outside rail to command base is fine, and actually soldered on the track side. Could aging batteries in my remote control be the cause of this? (or the 9v in the tenders if they locmotives have them, I can't remember)
The battery in the tender is ONLY there to support the sound card with momentary power interruptions, it has nothing to do with TMCC operation.
The remote batteries can cause issues, Obviously changing them should be high on the troubleshooting list.
