Plasmas and heat - AVS Forum
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post #1 of 20 Old 08-05-2010, 10:14 PM - Thread Starter
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I have a 42" Hitachi plasma that I absolutely love BUT it pumps out a lot of heat. When you walk past it after an hour or so of use, it is like walking past a heater.

Does any one else have this kind of problem with their plasma?
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post #2 of 20 Old 08-06-2010, 01:45 AM
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Mine generates a fair amount of heat its just the way plasmas are i think.
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post #3 of 20 Old 08-06-2010, 04:38 AM
 
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All electronics pump out heat. My Samsung DVR actually puts out more heat than my Yamaha AVR.
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post #4 of 20 Old 08-06-2010, 04:46 AM
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My Pioneer 5080HD plasma puts out an impressive amount of heat, but I think thats just the way plasma is in general.

In comparison my PC 23" Samsung PX2370 LED monitor puts out nearly zero heat.
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post #5 of 20 Old 08-06-2010, 05:22 AM
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Newer plasmas are MUCH better about not generating so much heat.
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post #6 of 20 Old 08-06-2010, 05:50 AM
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Quote:
Originally Posted by Mathesar View Post

My Pioneer 5080HD plasma puts out an impressive amount of heat, but I think thats just the way plasma is in general.

In comparison my PC 23" Samsung PX2370 LED monitor puts out nearly zero heat.

well, that IS a bit of an apples to oranges comparison there, don't ya think?

both my kuros make a pretty decent amount of heat...

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post #7 of 20 Old 08-06-2010, 06:31 AM
 
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My new 58" S2 puts out very little from the back, and a tad more off the screen, but it's better than my 2008 50". Also does not have any fans that I can see, so they must be building them cooler now.
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post #8 of 20 Old 08-06-2010, 07:55 AM
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My 50c550 will help keep the living room warm this winter.
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post #9 of 20 Old 08-06-2010, 09:36 AM
 
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Im running slides right now, and if put my face near the screen on red or green, I think it's gonna give me a tan. Really surprised at how much light these new plasmas can put out.
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post #10 of 20 Old 08-06-2010, 11:18 AM
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Quote:
Originally Posted by Servicetech571 View Post

Newer plasmas are MUCH better about not generating so much heat.

Think 3 years ago plasmas were like 600W and one of the reason people buy LCD over plasma, even after plasma makers explained that is peak energy consumption whereas LCD consumption is fairly constant due to the CCFL backlight. That's why later brochures doesn't quote plasma power consumption. The plasma charging generates heat while LCD drivers switching polarisers do not.

But newer plasmas nowadays consume like half of that,making them much less warmer than the old ones
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post #11 of 20 Old 08-06-2010, 12:49 PM
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The heat/power issues is preventing me from getting a 65 inch plasma. My wife is trying to be green. She does not mind spending more money for a larger TV (got a 50 inch plasma now). But she wants the power requirements to be lower. Today's plasma are still major energy hogs. Energy Star is bogus. They just lower the contrast to meet the standard.

I was considering a Mits Laservue with 115watt 65 or 75 inch. But I really would prefer a 65 inch plasma but the wattage is huge on these suckers.
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post #12 of 20 Old 08-06-2010, 01:45 PM
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Quote:
Originally Posted by ccotenj View Post

well, that IS a bit of an apples to oranges comparison there, don't ya think?

both my kuros make a pretty decent amount of heat...

lol yea I guess so, I bought the LCD because my previous 24" Sony FW900 CRT recently died, The CRT put out a generous amount of heat as well but Im pretty sure the LCD puts out the least amount of heat due to LED backlighting (plus its only rated at 22W of power usage), To bad it cant compete with a Kuro's PQ mainly due to much weaker black levels.
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post #13 of 20 Old 08-06-2010, 01:56 PM
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Quote:
Originally Posted by Bo_Lang View Post

I have a 42" Hitachi plasma that I absolutely love BUT it pumps out a lot of heat. When you walk past it after an hour or so of use, it is like walking past a heater.

Does any one else have this kind of problem with their plasma?

Each brand and each model puts out different amounts of heat. Go to a major Big Box store place your hand at the top center back of the various models. It is surprising what you will find. There are many Plasmas that are cool to the touch, there are some LCDs you can fry an egg on; they are all different. The Hitachi's plasmas from just a few years ago were burning hot.

Our plasma is about 5 degrees warmer than the room after playing 8-10 hours. The DVR is about 10 degrees warmer, and the AVR when playing sound loud is about 15 degrees warmer.
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post #14 of 20 Old 08-06-2010, 02:01 PM
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I got a 42inch pj350, thats the hottest little plasma in the hood! its like the back of a refrigerator. lol. i think it might melt away 1 day.

for $489.00. im not gonna care. but its something lg, &other manufacturers should look into. this winter, this bad boy might heat the whole house! lol
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post #15 of 20 Old 08-06-2010, 08:40 PM
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Quote:
Originally Posted by bigtom4prez View Post


I was considering a Mits Laservue with 115watt 65 or 75 inch. But I really would prefer a 65 inch plasma but the wattage is huge on these suckers.

The difference in heat/consumption between LCD & plasma is seriously negligible these days. My year old Samsung plasma runs cooler than my three year old LCD ever did. And the LCD was five inches smaller.

It's much adieu about nothing.

Get the Laservue if your really want to make a dent in favor of conservation & if this issue is of primary concern.

Mourning the disappearing usage of the -ly suffix. Words being cut-off before they've had a chance to fully form, left incomplete, with their shoelaces untied and their zippers undone. If I quote your post (or post in your thread) without comment, please check your zipper.
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post #16 of 20 Old 08-07-2010, 04:23 PM
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I can feel some heat from my 5020 Kuro within a foot of the screen.

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post #17 of 20 Old 08-07-2010, 05:01 PM
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My 50S1 makes my bedroom at least 10-15 degrees hotter. No joke.
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post #18 of 20 Old 08-07-2010, 06:47 PM
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Quote:
Originally Posted by CruelInventions View Post

The difference in heat/consumption between LCD & plasma is seriously negligible these days.

Not according to CNET published measurements. While Plasma energy consumption has improved somewhat so has LED. A plasma will still consume 2-3 times the power of comparable sized LED and radiate 2-3 times the heat.
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post #19 of 20 Old 08-08-2010, 12:41 AM
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Quote:
Originally Posted by Servicetech571 View Post

Newer plasmas are MUCH better about not generating so much heat.

Good to know, thx
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post #20 of 20 Old 08-08-2010, 05:14 AM
 
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If you get about 1 foot from the screen of my 58", with the slides running right now at 100 contrast, you can feel the warmth. Over the past 6 years they've done well at helping the heat, especially on the back, but the glass will still put some off.
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