I recently purchased a Lionel Legacy Mallet (6-85184) from 2018 that had never been run. Everything works great except the light in the left number board is sporadic. This steam locomotive has number boards that are always lit when track power is on. The right number board light works fine, but the left one will be dark and then becomes illuminated as this engine runs on my layout. Once it’s working, it seems to stay working for the duration of the running session. Then, more times than not, this left number board stays dark for a while during my next running session.
Could this be a loose wire, defective LED or something else? Note that this is an articulated locomotive, so the front end of the boiler moves around a lot as this engine negotiates curves. Any ideas to keep my number board illuminated are appreciated.
Peter