I have a rather old version of TV - it's true but before buying the ATV 4th gen - which is also my first ATV ever, I used an ASUS Oplay! Mini. I noticed a few nights ago a pretty loud background noise - when there is nothing playing. It's like a background white noise - pretty annoying in the evening when my kids are sleeping - if I leave the TV on- especially now that I realise it's there. Do you have similar experience or it's just my TV?