I bought a bachmann dcc sound value onboard, item no. 68912, ho ft locomotive New York Central. I just placed it on a program track, to hear the functions. But when power is applied to the track, the engine flashes four times, pauses then repeats. After that, I have no response from engine. I don't understand it. I tried to do a research on what would cause it, I even reset cv to factory reset, but still no response. I would like some assistance, if you can on what I can do? Thank you.