My prized Lionel 18018 Southern Mikado from 1992 suddenly stopped working properly. The engine slowed to a crawl and the transformer circuit breaker cut the power.
Opening the tender shell, I am extremely sure the internal circuit board (part 691-8018-T17) has gone bad, since it smells funky and has gotten very hot. The part is no longer available from Lionel (not surprisingly since electronics keep advancing). The RailSounds 1.0 boards and every other board in the tender seems just fine.
So, any help would be appreciated. I had plans to upgrade this engine to Command, so I guess that'll be my best solution.