While attempting to syncronize a bachmann decoder (item 44915) with
another mfr's sound system, I lost the address of the decoder ( I had
already programmed it to my loco's road number from the factory "3").
The headlight still works and responds to my MRC controller headlight switch.
Motor is good (still works on DC).

Is there a CV to recover the factory settings?  Is there some other way to get
it to respond?