This locomotive originally had a Esu lok sound decoder but it ended up burning out some how so I replaced it with a Soundtraxxs mobile dcc decoder (MC1) and it ran fine for months but the other week it would respond to lighting commands but not moving comands I took it to my local train club where they have a programmer they tried everything they could try and even opened it up so it is shrouded in mystery so this locomotive is for part or if you think you can fix it. The lighting functions are (F0= Head light) and (F5 and F6 Conrad the ditch lights seperetly not sure why they aren’t as one command)