I am having a problem with the point to point auto reverse system.  I purchased it new, set it up, followed the instructions, conntecting the track correctly, no extra track added....the trolley only goes in one direction, when it gets to the end, it does not reverse, it just stops.

Does anyone else have this system in N scale?  I used it last 3 years ago, and took it out to set it back up, now it does not work....any ideas?  I did check and power is going to the transformer....