Some context this is a new Samsung BU8500- so every 4-5 minutes, usually after I've switched on the TV although not exclusively, I will hear a sound coming from the TV which can only be described as the sound of a mic being unplugged or earphones being put into a phone for example- basically a kind of static interference. It lasts for less than half a second but it's extremely irritating. I've tried changing hdmi ports for all devices, changing extension cables, changing sockets, removing and putting back all power cables and the problem still remains.
Any ideas or help would be very much appreciated. Thanks