Q: I have three engines lashed together. The sound is coming through . However when I turn the knob there is no response. The engine in the window is blinking and there are two stationary dots above A: If you are using a DT300 series or DT400 series throttle, make sure that the Track Status Indicator dot in the upper right of the display just below the right throttle knob is on solid. If it is not on at all Track Power is OFF. If it is blinking, Track Status is in Idle and the throttle knobls will not move the locos. To ...