Since I installed my new Tosh 52WM48P on Saturday I have noticed that Ch5, Sky1, E4 etc. are all breaking up badly. For Bravo and a few other obscure channels there is no satellite signal at all. BBC & ITV channels are all ok. I've reset the box twice, re-fitted all the cables etc. - no difference. I've been on the phone to Sky and they say it'll cost me a £65 call-out charge for an engineer to diagnose and fix the problem. Is this a known/simple solution that I can cure myself or do I need to bite the bullet and call out the engineer ? Thanks in advance.