ericstrains.com posted:Engine speeding down the track and smoke unit operating without activating it, in my experience at least, usually indicates that the engine is not getting a proper Legacy/TMCC signal. This can be caused by:
1. The antenna wire coming from the R4LC (I think that's what it's called) board is not connected or is faulty in some way. This is easy to check for and usually easy to fix. On a steam engine, the antenna wires are usually connected to the handrails on either side of the boiler.
2. The R4LC board is faulty in some way or is not connected properly.
3. The Legacy/TMCC signal going to the track is faulty in some way. If you've got other Legacy/TMCC engines that work properly on the same stretch of track while this one doesn't work properly, you can rule this out.
Of course, this is all just in my personal experience and opinion. But it's a place to start at least.
Thanks,
Eric Siegel
Eric, these engines have the RCMC and not the R4LC. Anything made after about 2010 has the new board set.
