I bought a beautiful A-B-A set off Ebay recently and it was working great. I decided to switch engines and use another so I removed that one and put the new one up. I say "up" because my layout is wall mounted near the ceiling in my NYC apartment! I don't keep multiple locomotives on the track because any extra room is consumed by non-powered rolling stock, and, I have had certain engines take off in sync with my inputs to the engine I happen to be running. So I eventually placed the A-B-A back up and the DCS refuses to recognize it. I have thoroughly cleaned the track, rollers and wheels, and still nothing. I also made sure the switch was set to DCS. I would like to do a reset, but obviously cannot. I removed the body to make certain the engine is indeed proto 3, and I suspected, (extremely reputable seller,) no battery.
I am going to take it to a hobby shop and have them reset it for me but I thought I would run it by you guys first.
Thank you very much, Chris