MTH 20-2157-1 GP38 Questions

The manual isn't online for your engine, but I have a similar one (20-2186-1) and these manuals should give you some of the information you are looking for. I would definitely put a BCR in to replace the battery if you plan on keeping it for the long haul.

Thanks, John!  I was able to start figuring out the features with that manual.  Everything seems to work so far, but I think the battery is dead as the sound drops out when I change direction.  Not sure whether I'm going to keep it yet, but it's a nice-looking engine, runs well and has some "play value".  Going to check into the BCR next.

Thanks again!

Mike-

To activate the squealing brake sounds, rapidly lower the track voltage. Activating the freight yard effects is a little trickier - place the unit into neutral, then press and hold the bell button until a second air release sound is heard. Cycle the e-unit again, then place the unit into neutral. Once in neutral the freight yard sequence begins. Press the direction button (or interrupting track power momentarily) will trigger the next sequence; the last sequence will be two short air release sounds followed by an announcement the train is leaving the yard. The bell will turn back on, and after a short delay the locomotive will resume the direction it previously was in.

I would definitely consider replacing the battery before continuing to test/operate the locomotive. Low battery voltage can cause the programming chip on the unit to become corrupt, rendering the unit inoperable. In the interim you can allow the engine to charge overnight, or temporarily install a regular 9V alkaline battery. The BCR1 ultimately will eliminate the low charge/dead battery issue. It isn't a battery, but a capacitor that holds enough charge to simulate the battery's function.

-John