Posting photos might be helpful.
Do you mean the admin screen said "WBA-12", or the label on the old bv said "WBA-12"? Not sure about your wording.
Are you confident that the WBA you bought is a good working one? If the old WBA was working fine then I wouldn't think it would go bad just sitting. Does either WBA pull a bill in, then reject it back after a few seconds? Anything else done to the machine, like doing a CLEAR ram process?
The manual says that in Admin Mode there are 4 choices, one of which is "Tests". If you select "Tests", then select "Currency", it will let you select the bill validator installed in the machine. Does that work?
Also, does your machine need a fresh battery on the cpu board after sitting for so long?
(click image to enlarge)
