My mum has got an ancient Sony Sky digibox (VTX S750-U). The thing has been on the blink for yonks and now does`nt come on at all. I think there is a problem with the part of the circuitry that actually switches the thing on (I don`t really have a clue about these things - can you tell?). When you plug it in, there is a really high pitched noise coming from it, as though it`s trying to power up. The last time I got it to come on, the high pitched noise disappeared, which makes me think that this is something to do with the problem. Anyway, does anyone know anything about this particular unit? I spotted a second hand, more up to date Skybox in a local shop the other day - would my mum`s Sky card work in a different box, or would she need to get a new card? Lastly, are there any other Satellite boxes that I can buy that can receive everything that a Sky box can? I`ve tried the Humax Freesat box on my mum`s existing dish but it does`nt receive everything that the old Sony unit can (when it`s working).