I have purchased a 50" TU8000 HDR Smart 4K TV with Tizen OS. I'm using the optical out of the TV into my soundbar. I have used this sound bar on an older model of samsung TV without any problems and have tested on another Samsung TV with no problems but for some reason the audio has a horrible hiss on it which you can really hear when there is a quite sence on a film etc. I do work with audio for a job so can tell when it doesn't sound correct!! Do anyone think this could just be an issue with my TV which is less than 12 months old or could it be this model that has a problem??