GGG,
Thanks for this thoughtful reply. I agree it seems to me that it is an electrical problem and initially I very much thought it was losing power from SHS track. The track is in excellent shape, other engines run fine. I also tried cleaning the engine wheels, but again it seems to start up fine, lights, station talk, but just moves forward an inch or so then powers down in sequence. I did write earlier to MTH requesting help, nothing yet in over two weeks. I will follow-up. Much apprpepciated. Mike