DCC Sound Value locos gone silent

[slufoot]

I have two Bachmann DCC Sound Value engines ( a 2-6-0 steamer and a S-2 diesel ). Both are about three years old. The DCC functions (direction, lights and throttle) all function fine. However both have gone silent, no sound of any kind. Neither have any excessive run time. I am at a bit of a loss. Have any of you encountered this issue and/or found a fix for this? Any info or suggestions would be appreciated.

Thanks in advance,

KT

[wjstix]

I always like to start with the easiest solution and see what happens, so maybe first double check you didn't accidently hit F8 to mute them - though seems unlikely that would have happened to both engines (unless both have the same ID number). Then, try doing a factory reset, which should be described in the instructions that came with them. The engines should then revert back to ID 03/003. Try it and see if that works.