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Heat from a LG LCD

post #1 of 7
Thread Starter 
I'm not sure if this is normal or a problem. My 42 inch LCD TV (model 42LBDR1) seems to get fairly hot. The performance doesn't change, it just gets warm at the top of the TV.

I measured 111 degrees F at the top vent. Other than that spot, the temperatures are not of concern.

Interestingly, the manual states that the operating temps should not exceed 104 degrees F. I'm not sure whether this means in a 104 degree room or where this max temp is to be measured from.

In any case, is this unusual or problematic? Does anyone know what this operating temperature is meant to refer to (the TV, the room,...)?

Thank you.

Bob
post #2 of 7
My set gets really hot, too. Maybe I should put a fan behind it.
post #3 of 7
I think it is common with all lcd's my samsung lns4696d gets hot and when you put your hand in front of the display after it is on for a while.
post #4 of 7
It's not normal for a lcdtv to get hot let alone as hot as your sayin' dillrob.Warm,yes.Unless it's a cheapy but still 111f seems abnormal imo.Typicly plasmas are the ones to produce enough heat to save on your heating bill.I would look into that with the manufacturer.
post #5 of 7
The operating temperature they mention is likely ambient (room) temperature. Fluorescent bulbs may be more efficient than incandescent bulbs, but are still not 100% efficient (they still generate some heat). It is not something you notice with a laptop display, and I cannot hardly feel any warmth from my 19" HDTV ready 4:3 monitor/TV. But it increases with brightness and size, so I did notice heat from my 27" widescreen LCD and 40".

Something to note is that LCD response is temperature related, which is quite evident if you ever went camping in freezing weather and took an LCD watch off at night (digits transition very slowly when that cold). So a warm LCD can be more responsive than when first turned on (maybe insignificant and not noticeable at room temperature for a fast display).
post #6 of 7
110 F is not "hot" by LCD standards. You have nearly 200 watts of backlights, of which 80% of it is heat. It has to go somewhere.

The LC material tops out at 50C. At 65 degrees C, LCDs for TVs will go black.
post #7 of 7
and it cooks... dont forget you also have a mini computer in there because of the hd dvr.. that creates a bunch of heat too.
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