The board I had in this particular loco with TAS EOB was a RS4 Generic Steam. I have a NYC Mikado Jr with RS5 and love the improved sound quality and Talk of the RS5 so I bought the same board and put it in this loco, a MTH RK Commodore Vanderbilt w/ no cab #. It sounds so much better than the RS4.
I bought this Railsounds 5.0 / NYC PT Tender (Sep Sale) #5429 - 691RS50020 thinking I might use it in another loco with TAS EOB but tested it in this CV loco since I knew it worked well with a RS5 board already.
Maybe the shipped already toasted? Maybe it being a "Tender" board it isn't the same/compatible as a regular RS5 board which for the same loco was out of stock?
From TWS's comments, it sounds like, maybe, a loco RS5 board paired with a tender RS5 board are different animals and may not work as stand alone RS5 boards.
Thanks for all the help and suggestions.
Ward