This was the problem with our 4 year old Samsung 4K 75" We were lucky to find your store. This one connect box was a great idea but poorly designed. This box is extremely hot when the TV is in use . I'm sure they could of built it with vent holes or a small fan such as a CPU fan used on a computer processor. Your store was great for support . I had a representative from your firm who helped to make sure a got the right part number for my system.