I have two NS Heritage LEGACY SD70ACe's in a Lashup with the Lionel Legacy system. The lead engine of the Lashup has an annoying humming noise when it is at rest with power to the track while awaiting the Legacy startup command. When Legacy starts the Lashup the engine with the annoying humming stops. Any ideas on why it hums when waiting for Legacy to start the Lashup. It is very annoying listening to the Hummer. Should I delete the Lashup and start over with a new Lashup using the same engines again? Thanks for any help with this.
Harry