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Panny Plasma putting of heat

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Old 05-25-2010, 04:22 PM   #1
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Default Panny Plasma putting of heat

The TV in my sig is putting off what I would say is some decent heat. Its not noticable across the room, but when I get up to shut the 360 off of walk by it, you can sure feel it. Its usually on for 4-5 hours straight of an evening. Should I be worried? Anyone else notice this?
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Old 05-25-2010, 04:25 PM   #2
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Mine does that as well. My 47" 1080p LCD does this as much or even more too. It is normal. The newer plasmas & LED LCDs use even less energy so there is even less issue with the newer models that are 2 years newer than ours.
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Old 05-25-2010, 04:46 PM   #3
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Mine does the same thing. It's like I have a fireplace in my living room. There's probably a 4 or 5 degree split between my living room and the rest of my house. The price you pay, I guess.
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Old 05-25-2010, 05:11 PM   #4
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I have the exact same model you have. And yes, it's normal. I knew I was in for some serious heat output when I saw the power cord.

But honestly, I think my Onkyo and Xbox put off about just as much heat. I remember being in the living room one time after shutting everything off to read a book ( ). Anyway, after a few minutes, I could hear the wood in the furniture cabinet that holds everything creaking as it was cooling off. I would have never noticed it had I not stayed in the living room. It was very faint, but distinct.
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Old 05-25-2010, 05:59 PM   #5
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Glad I'm not the only one. Never thought much about it, until it got me wondering about if it would affect the life. Guess I won't worry about it anymore.
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Old 05-25-2010, 06:52 PM   #6
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I have an 80U and a newer V10. The 80U puts off a decent amount of heat, while the V10 barely gets warm. 2 years in electronics makes a huge difference
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Old 05-25-2010, 06:58 PM   #7
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All TVs put off heat - it's been that way for 70 years. Panasonic plasmas are known to run cooler than most though.
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Old 05-27-2010, 09:30 PM   #8
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just put your banquet dinner next to it. that is why they were called tv dinners at one time.
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Old 05-29-2010, 08:02 AM   #9
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Heat output is a big consideration many do not take into consideration when looking to purchase or a location where a TV will be installed.

Heat output is not a posted spec and at many of the big box stores the TV's are mounted up high and potential purchasers usually look at the TV for picture quality from a distance.

But heat output was one of the primary factors in the decision for my master bedroom TV. I had a smaller 37" LCD 720p and wanted to update the TV to something larger with 1080p.

Started thinking long and hard about the subject, then had a friend who's caps in the power supply died and I repaired the TV for them. After a lot more thought I realized that heat is a factor to both room comfort and TV longevity.

I also recalled that your face is probably the most sensitive area of your body for temperature. So when looking at sets I started to walk up closely and see how much heat was radiated by using my face. Then it dawned on me I had a nice IR thermometer!! Bingo, now I was on to something.

So one day I hit the local Best Buy with my IR thermometer. Had the front entrance guy tag the item that it was mine and I brought it in with me. Then I found the guy responsible for TV section and told him what I wanted to do with this gun looking thing. I did not want anyone to freak out thinking I was going to blast or damage a display unit. The TV section sales guy then realized I was on to something and became quit curious himself of the differences and what kind of temps I would be finding.

One requirement I had was for a very thin TV and wall mount due to the bedroom layout and traffic pattern. So I started to also look at some very thin sets. I originally wanted Plasma due to the response time and black levels.

Then came reality!!

I was really interested in a Samsung ultra thin Plasma. My face told me this thing was rather hot, I put my hand on the rear of the set and found a real hot spot that I could not keep my hand on for long. Then I put the IR thermometer to the test.
Surprise!!! 170 degree F hotspot about the size of a coffee can, overall the display averaged about 130-140 degrees!! This is not a TV, this is a radiant wall heater!!!!! We are talking about a medium to well done roast beef here!!

Then checked and compared some LCD, LED-LCD sets and some the Panasonic Plasmas in the store. Looks like the LED-LCD and the Panasonic Plasma are probably the coolest that I tested, about 110 degrees F.

So after some thought that I plan on putting a 47-55 inch TV in a 13' x 18' Master bedroom with a 8' ceiling. I clearly and quickly ruled out the Samsung Plasma and decided after a lot of thought to go with LED-LCD. This was mainly marriage stability. I thought that during the colder months, the additional radiant wall heater would be a great addition, however, during the humid summer months, I thought it would be in my best interest to not have an additional radiant wall heater in my bedroom.

How many women have ever complained they are too cold the summer?? I figured I would need an additional window AC unit in the bedroom just to watch TV with the Samsung 50" thin Plasma.

Keep the room size and conditions in mind when shopping for a new display! As someone mentioned, all TV's put out heat, just some WAY more than others!!
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Old 05-29-2010, 11:39 AM   #10
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Are you replacing a CRT you currently have in the room? What kind of heat does that CRT put out? I bet it is higher than any of them.

I have noticed that the Panasonic plasmas run about as cool as the LCDs, and my 47" LCD actually puts off a little more heat than my 50" Panasonic plasma using my hand as the thermometer.

One other thing to consider is that a Panasonic plasma has better black levels, especially with the lights out (common for a bedroom setup), which is WHY I will be replacing my bedroom LCD with a plasma next.
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Old 05-29-2010, 12:27 PM   #11
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Currently I have an older 32" LCD, puts out an average of about 110 degrees F across the screen face, but if I move up to a 47"-55" screen size, this is a whole lot more square inches of 110+ degree radiant heat added to the room.

I doubt my older CRT put out as much heat as the flat screen as, usually the hottest part of the CRT set is the power supply and not the screen. Still have it in one of the kids rooms, so I could probably measure, but would be a bit hard to compare. Even they way I measure with the IR thermometer is not a scientific as it could be. What we need is a constant heat rise spec or BTU output spec that is consistently measured across the industry.

The other concern I had for the bedroom is ambient noise from the screen. I know that many Plasma units have the "buzz", some louder than others, some "buzz" more after use and many manufactures have started to claim the "buzz" is normal, even when not actually being in the room with the set. An over the phone "buzz" is normal. But I know what a "normal" plasma sounds like vs. a noisy plasma. So sets may have fans in them as well?? not look really closely about this lately, however, I recall some of the very early 50" plasmas from about 10 years ago had fans in the case.

What I did find it the Panasonic Plasmas did appear to be cooler than the Samsungs and about on par with the LCD/LED sets. At the time, many of the Panasonic Plasmas did not have the Internet/Networking features that some of the Samsung's had, or at least in the price range I was looking. In any event, the Internet/Networking features are rapidly expanding in past year in both options and TV's that include them.

I have held off this far from making a purchase, so I will probably continue to wait until the Internet/networking options are more main stream and the processors have enough horsepower to speed up menus and display content.

I was an early adopter of the Zenith Teltext way back in the day!!
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Old 05-29-2010, 01:19 PM   #12
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An infrared thermometer is the most inaccurate way to measure the heat. It would be like putting your finger on top of your cpu and saying,,yup,,computer is hot. For me test's,,an accurite indoor/outdoor thermometer is used. The outdoor thermocouple is placed on top, slightly behind, and centered over the back vent. The indoor thermocouple and display is placed on the wall about a foot behind and above the tv. The reading directly on top of the tv stays around 94.8 - 97 degrees fahrenheit. The reading at the wall stays at about 73.5 - me air conditioner is set at 72 degrees. The tv has been on for over an hour - no change. As for buzzing,,and since me ears be bad,,,me used a Canon HF-20 HD camcorder and a sony cardiod mike placed directly in front of the tv - with the tv on and muted - absolute quiet.

According to me tests,,you should replace that 32" lcd with a 50" plasma for a cooler room.

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Old 05-29-2010, 03:13 PM   #13
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Quote:
Originally Posted by jfoj View Post
Currently I have an older 32" LCD, puts out an average of about 110 degrees F across the screen face, but if I move up to a 47"-55" screen size, this is a whole lot more square inches of 110+ degree radiant heat added to the room.

I doubt my older CRT put out as much heat as the flat screen as, usually the hottest part of the CRT set is the power supply and not the screen. Still have it in one of the kids rooms, so I could probably measure, but would be a bit hard to compare. Even they way I measure with the IR thermometer is not a scientific as it could be. What we need is a constant heat rise spec or BTU output spec that is consistently measured across the industry.

The other concern I had for the bedroom is ambient noise from the screen. I know that many Plasma units have the "buzz", some louder than others, some "buzz" more after use and many manufactures have started to claim the "buzz" is normal, even when not actually being in the room with the set. An over the phone "buzz" is normal. But I know what a "normal" plasma sounds like vs. a noisy plasma. So sets may have fans in them as well?? not look really closely about this lately, however, I recall some of the very early 50" plasmas from about 10 years ago had fans in the case.

What I did find it the Panasonic Plasmas did appear to be cooler than the Samsungs and about on par with the LCD/LED sets. At the time, many of the Panasonic Plasmas did not have the Internet/Networking features that some of the Samsung's had, or at least in the price range I was looking. In any event, the Internet/Networking features are rapidly expanding in past year in both options and TV's that include them.

I have held off this far from making a purchase, so I will probably continue to wait until the Internet/networking options are more main stream and the processors have enough horsepower to speed up menus and display content.

I was an early adopter of the Zenith Teltext way back in the day!!
With a CRT it is the back of the TV where the heat comes out that is why the vents are there.

ALso it is not completely fair to compare a 32" screen for heat output against a 50" screen. That is like comparing the gas used in a truck to a compact car but expecting the compact car to haul as many people or tow the same load.
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Old 05-29-2010, 05:41 PM   #14
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The 55" is roughly equivalent to three 32" TV as far as radiant heat surface area. This is especially true of the Plasmas.

Disagree that the IR is not useful here, I am taking measurements with the same device and in roughly the same way. So I am making comparative measurements.

If I really was going to take the time and effort to deal with this, I would put each TV in an insulated enclosure and run some real world heat output tests. But I really do not care about this level of detail, what I can say is I will not be putting a TV in that has surface temps upwards of 145 degrees with an average of about 125 degrees. I will be performing similar measurements a more than likely purchasing a TV that averages around 110 degrees or lower if I can find on.

At the end of the day, the absolute value is really not that important, it is the device that runs cooler for both product and marriage longevity! Could be a Plasma, could be an LED/LCD?? Depends on the features and price point I am after.
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Old 05-29-2010, 07:42 PM   #15
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Quote:
Originally Posted by jfoj View Post
The 55" is roughly equivalent to three 32" TV as far as radiant heat surface area. This is especially true of the Plasmas.

Disagree that the IR is not useful here, I am taking measurements with the same device and in roughly the same way. So I am making comparative measurements.

If I really was going to take the time and effort to deal with this, I would put each TV in an insulated enclosure and run some real world heat output tests. But I really do not care about this level of detail, what I can say is I will not be putting a TV in that has surface temps upwards of 145 degrees with an average of about 125 degrees. I will be performing similar measurements a more than likely purchasing a TV that averages around 110 degrees or lower if I can find on.

At the end of the day, the absolute value is really not that important, it is the device that runs cooler for both product and marriage longevity! Could be a Plasma, could be an LED/LCD?? Depends on the features and price point I am after.
Me test's cant be anymore real world - a functioning plasma in me living room. The heat output is stated and consistent to me earlier post's. Certainly the power supply get's 110f +. Who gives a squat as long as the temp's coming out and around the tv are well below that. If me stuck the thermocouple on top of the power supply, it would probably read the same as your IR thermometer. But that is not a true test. Currently have the thermometer measuring the 32"lcd in the bedroom,,me guess is that the numbers will not be to different from the 50" plasma.
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