I have a tesco 32 inch technika tv it has a continual low noise
sound which goes when sky is selected ie the noise is there
,on digital signal and analogue, can anyone tell me how to
get rid
check your scart lead on back of tv and on set top box if ok(pushed all the way home).change scarts over from sky and teresterial set box over if hum(sound) still their you might need a new set top box.