Well, I scoured the web last night and could find nothing to indicate a reset code for AlphaStar receivers. They were built by TeeComm but I have a suspicion they might be compatible with old Star Trak (once built by EchoStar) receivers -- maybe....
You could always try the Star Trak codes and see what happens.
:?
kat
linky --->
http://www.satellitehelp.com/star_500_index.asp
The Star Trak is cross referenced to the TeeComm models so perhaps this site has some good inside dirt.