Semona

I am looking into buying a plasma tv, but I have heard that the screen will sag over time. This is said to be due to the weight of the materials used in the screen. Is this true? Thanks

ITRocks

First I heard of that one??

Cyborg

That's because it's not true.

TechBoy

OK, I wanted to post some info, other than just simply saying that this isn't true, because now you'll realize what poppycock it is. (This has been brought up in the past in regards to toslink optical cables too, believe it or not.)

http://en.wikipedia.org/wiki/Glass_transition

"A material’s glass transition temperature, Tg, is the temperature below which molecules have little relative mobility"

Silica is silicon dioxide which is "glass" which is what most plasma screens are made out of (i.e., "8th generation glass"), which is the highest value in the table, at 1175C. That is ... 2147 deg F. A plasma can run hot, but not that hot.

Cyborg

I heard a few people say they sag with large screens like 63". I also heard it here:
http://forums.macrumors.com/archive/.../t-187324.html
(read 3rd post)

So it is not true that plasma's sag, no matter what the size?

TechBoy

Not true. Or, someone better tell Panasonic, because they are going to sell a 103" set soon.

Plasma's weigh a ton? I had a 32" Toshiba CRT that weighed 150 lbs. My 37" plasma weighs about 65 lbs. Even the new 58" Panasonic plasma weighs less a lot less than 150 lbs. And that's a much bigger difference in screen area than the diagonal measurement implies.

To be honest, I don't think a Mac Rumor site is the best place to get info about plasmas, LCD, etc.