Have been getting the no signal message on and off for the past week but since yesterday I'm receiving no channels at all, just a constant no signal message. Looking at the settings menu, The signal strength seems normal, but signal quality is zero and there is no lock. I have a sky+ hooked up to the same dish, and this is working fine. So, is this a problem with The LNB or the box itself, the alignment of the dish is obviously OK as the sky+ box is working fine. Is there a service menu that I can go into to check if there is aproblem with the LNB? Many thanks in advance.