Technically-minded folks of the forums,
First the set up. I have a LionMaster Big Boy #4006 and soon (hopefully) a LionMaster Big Boy #4011 both of which are having the same "issue". I set up a simple O-60 circle to verify that this issue isn't being caused by my normal layout. I have cleaned the tracks to make sure that all contact points are as clean as they can be for continuity.
Now the issue. With everything powered down, I place the engine and tender on the track, turn on the 180-watt power supply and give the track 18-volts. At that point all of the lights light up on the engine and tender and you can hear a click followed by a hum coming from the tender and thus, presumably, the speaker. If you then use the Cab-2 remote to tell the engine to move, even if it's not enough power to actually make the engine move, the humming stops and will only return when the engine is not given any input from the remote. "Shutting down" the engine does not appear to do anything (light stay on, hum stays). Otherwise, the everything functions perfectly.
So, is this just a quirk of the LionMaster series or do I have a bad audio/power board?