Signal-problems with 7020s after new LNB-head install..

[goodiegood]

when i plug the coax-cable from my dish to the SAT or LNB-port on my 7020s (i assume it's the LNB-port that i shall plug the cable into since i get 80% in SNR and AGC), and choose a channel, i get the message "service could not be found!".. however, if i take my other tuner (a regular satelite tuner) and plug the cables, i can view all the channels i want. so the signal seems to be all goodiegood.. when i go back to the dreambox again, i still get the "service could not be found!"-message when i try to view a channel! what am i doing wrong here, huh?

must i re-install all the channels over again on my Dreambox to make it work properly, perhaps..?

i must mention that before i installed the new LNB on my dish, i could view the channels perfectly on my Dreambox, but not anymore. oh yes, i am on a local card share between the tuner in my room and in my living room..

i have of course changed the Satelite-settings to work with the DiseqC 2-1, i've restarted the tuner and checked that i've got ok signal, and i do...

EDIT: when i tried to transfer a new boquet to my dreambox, i couldn't connect to my dreambox, so i went and changed my ip so i could connect with Llama and transfer my designed boquet.. perhaps it can be a networking issue since it wouldn't connect to the dreambox until i changed the IP..? i am behind a router. i haven't configured any settings on my router, but it has worked fine before without any need of configuring the router..

what can be wrong, hmm?