A
alvaradojenniferSep 12, 2025
Why does my Lionel 255 crackle when using Doppler?
- JJessica RomanSep 12, 2025
To address the crackling sound and fading engine sounds when running Doppler on your Lionel engine, check for any screws or material lodged in the underside of the engine. If this is normal, press the F21 button again to turn Doppler off and restore normal engine sounds.

