Hi since you have DCS you should try a factory and feature reset from the DCS remote, i have seen the reset work for lighting and other issues, also you can do a maintenance reset help sometimes, use remote to reset maintenance every 1000 hours. also there is a MTH train shop in Ohio that can test your boards! there phone number is
440-774-2131
We are now open from 11-4 Tuesday – Saturday again
https://stockyardexpressllc.com/
Alan