I have a 3680 Kof II switcher that I can't quite figure out. Apparently it has the ability to detect whether it's conventional or digital, is fixed with it's code of 59 at the factory, and has lights in the cab that can be switched on or off with the function key.
Here's the problem, it seems to work OK in conventional mode. But in digital it does nothing on channel 59 as assigned. But I tried starting at one and worked my way up. At 65 all of a sudden it took off. Running in reverse. I turned down the power and while it slowed it did not stop. Then I reversed it and it continues in the reverse direction but slower than it did at the top speed in the other direction. The function key does not turn the lights on or off. So all it does is go in reverse regardless of what I try and do. Now here's another thing. I tried other channels, and when I went to 66 I noticed that it would continue to run (Still in reverse) but I saw lights. But they went off, then I noticed that the lights seem to flicker when I wiggle the power control knob when it's running backwards in reverse. Any ideas as to what is going on? And why it works in conventional but not in digital?

Another thing you might check: did you switch the red and brown cables between controller and track?
Most decoders automatically handle this correctly, but some don't.
I've had this problem with one decoder that responded to the wrong address and did everything wrong - until I switched cables back. (Forget this post if you use the ugly box ...)