I am the seller of this keyboard. It was a spare as I ended up with a bad A2000 but a good keyboard (well, it WAS good) and figured I'd sell it off on ebay in order to fund stuff for my good working A2000. It worked fine before it shipped, so this issue perplexes me. If anyone has any idea as to what would cause this we both would greatly appreciate any advice.
@bob: I sent you a message on ebay in an attempt to try to make the deal "right". Feel free to PM me here as well.