DCC Bachmann Factory decoder will not respond. HELP from veterans is requested

[Balevre]

Hello all,

I have 2 Bachmann Spectrum 4-4-0 HO locomotives. One of these engines has a Tsunami Soundtraxx decoder, the other has the standard Bachmann decoder.
I doublehead these locos nearly every time I run them.  I am using a DCC layout (MRC Prodigy Express).
Previously, I had these two locomotives in a consist and I had left them in a consists for months. They worked perfectly in said consist; the number of which was 8.
I had adjusted the speed curve on the Tsunami to match the Bachmann.
On the date of this post, I cleared the consist to have both trains run independently. The loco with the Tsunami worked perfectly upon readjusting the speed curve.
The loco with the Bachmann decoder now will not respond to any commands (The loco will not run on strictly DC powered layouts either).
I know for a fact that the problem loco was address 4.

Things I tried include:
1. Reset the decoder with CV 8 to 8 and CV 30 to 2.
   a. I know that most Bachmann decoders are Lenz decoders and as such setting CV 8 to 33 is sometimes necessary to reset. I have done this as well.
2. I have set CV 19 to 0.
3. I have attempted to clear the consist again.
4. I have left only the problem on the main track and tried to program on the main to address 0000 in an attempt to reset with this address, then cycled the power.

None of these steps have worked. I have tried all of these steps on the programming track and the main.

The only guess I can conger is that perhaps there is an issue with the CV relating to the address of the loco or the decoder is fried.

Any and all pertaining advice or comments are welcomed.

Happy rails,
Brandon

[jward]

are you able to read back the cvs you programif so, are they the numbers you programmed?
med?