Help me out guys. I am having a problem with 2 21.0 replacement remotes I purchased. I just pulled them out of the packaging. When I insert the batteries, the SAT button lights up green, then goes off after about 5 minutes. Push any button to try and program the remote, and the SAT button lights up again for another few minutes. Both remotes are doing this, so I must be missing something. Are the remotes defective, or am I doing something wrong? Thanks for your help.