Smoke unit on my F-3 went up in smoke!!

You engine technical parts listing  https://www.lionelsupport.com/...A-PWR-A-19-DMY-A-19C

This detail from the parts listing tells us a KEY POINT- this is a smoke unit with an EXTERNAL regulator.

So yes, you can unplug the smoke unit 3 wire/pin connector- basically you are unplugging from the regulator.

The actual problem is likely the fan motor just needs lubed or replaced.- But you said you did not want to repair.

Not sure the exact motor as there are 2 types/sizes and hole mounting patterns. Not to mention, many of us use MTH smoke fan motors when they fit for repairs.

I also would turn off the smoke switch just as an extra measure https://www.lionelsupport.com/...ents/71-4588-250.pdf

While this is a different smoke unit, the basic functions, parts and lubrication of the fan motor is the same.

https://youtu.be/4ie1ByI3Z4Y?t=459

Vernon covered everything. If you don't want to open the engine up and disconnect the pin connector hit the switch on the bottom of the engine in the diagram to turn it off, but I agree that for extra measure do both. You just don't want current going to the 8-ohm resistor.

I can tell you I had a smoke unit go bad recently, but it was extremely noisy and did not produce any smoke. Replaced the smoke unit motor and it worked but was noisy. Took it apart AGAIN and lubricated the motor. Worked for a bit but is back to a that classic whine. Nothing concerning just annoying, so I completely understand where you're coming from. This is unfortunately a common issue.

Vernon and Matt,

Thank you for sharing your knowledge with me. I disconnected (and turned off) the smoke unit. I'll most likely buy a new motor for the fan while it is still available, I can install it at any time if I want. I am glad that whining was not something seriously wrong with it.

Thanks again!