Humax PVR9300T 320GB Review

Humax 500g Hd freesat PVR recorder, £299.99 at Curry's... Bought this at Curry's for Christmas, was told it was the best of the best and a brand new innovative model which would recod all freeway and terrestrial channels including all free HD channels also. Only one in shop so took it, connected it all up exactly as the guide book instructed, plugged it in an zilch! Not a light, no noise, heat - a total disappoinent altogether. Took it back the next day and requested another - they DHL one over after 5 days, all still factory sealed - did the same thing, this one just made an electric crackling noise like it was going to take fire! Took it back and got a refund! Anyone else had this problem? Don't know whether to risk a 3rd from a different shop?