if you cant get sentanta sport its because they have changed the frequenceys , so you need to find the new"freq for they city that you live in , when you find it , go to add channel, in your menu , and add it , ,i dont know the freq for it , try www.digitalkaos.uk they might be able to help you .
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix satellite receivers.