thanks for your help as it’s is the board. While waiting for Lionel to ship me a new board. ( last one took 7 weeks to receive) I bought another little switcher S-4 Alco. Ran great new out of the box for 5 days. No issues great little switcher to make up and brake downs trains. On the 6 th night I had been running 3-4 minutes , had it sitting at idle while another engine hooked up, looked over at it and smoke was bellowing out of the bottom, grabbed it off the track and the middle of the cab had melted to the smoke unit. Maybe I’m not supposed to run small engines?