DDC Locomotive was running now not.

[pstacks]

My son had purchased a DCC Loco right after Christmas. It's a Norfolk Southern 4271 with sound.  It ran no problem for 2 days.  Now all other functions are good just won't move.

[rogertra]

How old is your son?

Could be that all he's done is fiddle with the DCC settings.  Yell him not to do that again. 

Try resetting the decoder, set CV 8 to 08.  Not 8 but 08.

The instructions will tell you how to reset the decoder.

[GG1onFordsDTandI]

Hey doesn't this belong in HO? .. Everything else gets chased to its "home" no matter how small or LARGE the problem. Lets not be hypocritical now

[richg]

My son had purchased a DCC Loco right after Christmas. It's a Norfolk Southern 4271 with sound.  It ran no problem for 2 days.  Now all other functions are good just won't move.

The first thing you should do with an issue is reset the decoder like was mentioned.

Rich