Hi guys, call me demon- not angel (

)
i got a really annoying problem.... My set-top-box doesnt respond to any of the 5/6 remotes that i have... i have the two on the remote instructions article page and an ntl one with two buttons on each side near the top - its blue... tried them all none work.. i used this article on one of them and got the t.v. to respond to the remote but not the set-top-box... any ideas.. please reply any way you can - preferably via email. Thanks in advance..
oh yeah and if this helps - the black one used to work one time.. don't know what happened though.. OH and also, i jus played around with the remote, i kept on tappin the channel up button whilst moving around
it changed the channels for about 6-10 secs. and stopped again!

..
dont ask me if i changed the batteries etc. - i did... trust me, i have 5 remotes lol.
Thanks in Advance if i do get help!