I have sent it for repair once free of charge, but don't want to have to do it again, and if by keeping it cooler I can prevent it, I'd like to go that route. The dts chips that causes the no sound fault in these machines gets Nearly 80c but not as hot as the big chip to its left, I think this is referred to as the Bits Chip.
I have plotted all the hot chips sizes and ordered a pile of small heat sinks and a couple of 6" PC fans to fit on the top case to blow air over the board silently. Hopefully, I won't have to get it fixed another time with these mods. I will post a you tube video shortly of the thermal imaging of this board.

Steve