This question has probably been asked a million times before, so apologies in advance!! My problem is with the sound dropping out for about 1/2 a second whilst watching ANY sky digital channel. The intervals vary between occurances, but are normally roughly 30mins apart. Could this be a problem with the sound chip overheating? It seems to get worse if I leave the door of my TV cabinet shut, and also the longer I watch, the more frequent the dropouts occur. I know it's not the TV or amp, because I have piped the sky to four rooms in the house and it's the same in those rooms. Any Ideas???