Thank you for your response. I did find a chart with the default settings. I checked the volume as you suggested and it was set to 153.  I put it back on the main line and tested it again and got sound but no movement or lights. I re-entered the default address, after doing that I got movement and lights but no sound. This is so weird.  I'm sure it's something I'm doing wrong. Maybe I need to learn how to use JMRI instead of trying to do it from the controller.

Thanks,
Todd

I have a GS4 4-8-4 - SP Daylight #4449 RAILFAN (DCC SOUND VALUE) locomotive and a DCS52 Zephyr Express controller.  I was trying to change the locomotive default address (3) to something different.  Afterwards, the train had lights and sound, but wouldn't move, no matter which address I used. I tried setting it back to factory defaults using CV8=8.  The train runs but now I have no sound.  I have not been able to find much online about the default train and sound settings.  I have also read that the number of times the light flashes on the locomotive can indicate it's status, but I have not been able to find any documentation on that either.  Any help would be appreciated.

Thanks,
Todd