[Urlacher5454]

I'm still deciding on what set to get but I was wondering how ward do the LCD sets get? I would assume they give off less heat than a regular tube TV. Am I correct at assuming this?

 

[RyanGrob]

In comparison to tubes and plasma's, I believe LCD gives off the least heat. I know my friends 42" plasma gets quite warm when it's on for a bit.

 

[pete4]

The only significant source of heat in LCD is backlight, plus the usual heat from electronics and power supply. I believe most LCD's don't even have fan, but it's always good to have some airflow in the back of the screen. If you combine warm ambient temperature with poor airflow (lets say inside some sort of cabinet) and prolonged use, you could shorten the life of electronics inside, but it would be very unusual for the unit to outright fail due to overheating.

 

[WaldorfSalad]

Seems like most of the heat is emitted from the front of the set, through the LCD panel. I think that if the heat could be drawn out of the back of the set we would see a lot less problems with clouding. Just a hunch!

 

[CT_Wiebe]

My LG 32LC2D (32") vents most of it's heat out of vent slots at the top back of the set (there are vent slots all around the back edges for convection cooling).


It does run cooler than the 27" Sony CRT that it replaced (it's also rated at about 40 Watts less maximum power). My Samsung PC monitors (I have 4 of them, all LCDs) also have top vents - those vents make a big difference.


As pete4 said, the majority of the LCD heat is generated by the backlight and top venting keeps the screen much cooler. Our set is on for 24/7, except when we're watching movies or TV on my front projector, or on a vacation trip.


I also have my "Picture" control set to "Night Time" which lowers the backlight brightness and still provides a bright enough picture for daytime viewing (it's on a North wall with a big window behind it). It's sitting on top of a bookshelf and gets adequate airflow.

 

[DBLASS]

The LCD set runs on about 200 watts of power, most of which is heat from the backlight. The glass of the LCD is conducting the heat from this 200 "heater" directly to the front. Any LCD set can tolerate about 130 degree F before there is a chance of a heat related issue (the screen will go black until it cools down). Blocking the natural convection cooling "could" induce this problem.