I purchased these new and sealed several years ago at York, from a dealer.
I have had them on display on shelves.
I decided it was time to run them and I removed all the twist ties off the trucks and lightly oiled the axles and rollers.
As soon as I added power, I noted one of the coaches did not light at all.
The diner car interior lights flash on and off, consistently. (sounds work fine)
Today I put power to the track and now the observation car lights do not work (but the drumhead does work).
1. What could be wrong? (I have many other passenger sets from the early-mid 2000s and I have never had a problem with the lights).
2. What screws need to be removed to open up the cars?
3. Is there a diagram and parts list available?
Thank you.