Glad to see you are up and running again.

Even so, another thought occurred to me. Is your aerial properly aligned? When I first got a digibox, I had to get a new aerial so as to get an adequate signal. Once connected up, I had to align it to ensure decent reception. I did this by standing in the loft and rotating it. My wife and daughter downstairs told me via mobile phone when we had the best picture. Crude but effective.