HI IVE GOT TWO BOXS WITH NO PROBLEMS BUT WHAT I HAVE DONE IS RUN A CABLE FROM OUR BEDROOM TO MY SONS ROOM AND PLUGED IT INTO HIS PORTABLE TV IN THE AERIAL SOCKET ,, NOW THE PROBLEM THE PICTURE IS PERFECT ITS THE SOUND THATS THE PROBLEM AS IT IS MAKING A VIBRATING NOISE WITH NO ACTUAL PROGRAM NOISE IVE TRIED THREE DIFFERENT CABLES AND ARE ALL THE SAME AND IVE ALSO TRIED A SPARE PORTABLE TV AND STILL NO GOOD ., WHEN I PULL THE SCART OUT OF OUR TV IN THE BEDROOM AND GO TO THE NORMAL CABLE TO THE AERIAL THIS TO IS MAKING THE SOUND BUT WHEN:I USE THE SCART ITS FINE ???? 