I have bought a Humax HDR 1000S 500gb, I follow the instruction for set up, the box display says installation wizard but nothing appears on the screen. I have tried linking to TV with both the HDMI cable supplied and the old scar lead which worked perfectly with the Bush Freesat box I am upgrading. I previously bought the same Humax model but had to return it as it kept freezing, however I don’t remember any problems on set up. Is there anything I can try or do I have to take the second one back?