Is that Fahrenheit or Celsius? I suspect that's Fahrenheit, which is barely even warm when it comes to electronics. If it's Celsius, that would be over the boiling temp of water and physically impossible to touch. For reference, modern high performance electronics in computers run at about 176°F/80°C before they even begin to throttle due to temps.
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Yeah F. Though you are mistaken, I wasn't talking about the inner 'electronics', but rather the surface temps, which at those temps... were really really incredibly hot! In fact, exceptionally hot. So exceptionally hot that you could feel the heat radiating from the tv at 4~5+ ft (feet) away from it! So exceptionally hot, that when you walked by or past the tv... it felt like you were walking next to a giant radiant heater!
Our Sony's, by comparison, typ run at only 75°~81° F on their panel surfaces, and at only 65°~69° F on their backsides, and that's with the Sony's Backlight (Brightness) set to 100%!
In fact, when I put my hand up to our Sony's... I can't even feel any heat, whatsoever, until my hand is only 1/2" (inch) off the panel surface, and at that, only a faint warmth.
And I would suspect those temps are typ of most tv's, as our older (bedrm) Samsung smart tv's & monitors run at similar temps.
So again, 102°~106° F (with some spots actually up to 110°), was actually very, very exceptionally hot!
Enough so that it was actually raising the room temperature @ the T-Stat!
And so much so, that it felt pretty obvious that it would've surely cooked the board & processor & etc, if the Backlight setting would've been left at 100%. So that's why we had to turn the Backlight way down, with hopes that that excessive amount of heat hadn't already shortened any of the board components lifespans. Thence, lowering the Backlight to 50~60ish% did lower the panel surface temps—on our U8H—back down into the 80°+ F's.
Hisense tv's running exceptionally hot... have been reported, for years, throughout multiple
avsforum forum threads (where I've been a member for 15+ years).
We haven't had any audio sync issues. So Hisense updates haven't fixed your audio sync issue?