I have a TMCC 6-28075 where the smoke fan did not work in the past, it would smoke but no fan. Never got around to trying to fix it. I have had it for about two years, bought from a member NIB. Last night the fan just started to work out of the blue. Tonight no fan. I was running in command. I did open it up, drilled the hole bigger to get better smoke, removed the fabric sleeve from the resistor. I still get smoke but no fan. Should I just replace the whole smoke unit, $30 from Lionel, or hopefully my LHS. The part # is 610 8057 200. I am guessing just the motor could be bad, but it shows as unavailable. Assuming it is the original smoke unit, it is 17 years old.