Nope directly to the TV.
For this unit I used a new TV which has never been connected to the other units. There is only one other possiblity which could be causing this and thats the external HDD yet my Xbox One and S have never had this issue with it connected.
I'm speaking with MS support now and they are trying to see if the engineer has left any notes from the repair.
Try using it without external HDD and see if it gets better. You have major bad luck man :/