12-07-2009, 08:56 PM
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Almost never on here anymore :(
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Join Date: Jul 2008
Location: New Orleans, La
Posts: 6,891
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Dug up some more info on the lifespan of plasma and the buzzing sound some people complain about.
Quote:
Now to address a few concerns about plasma: First of all, today's plasma TVs don't have the same problems with premature image aging (burn-in, burn-out) that plagued older plasma monitors and TVs. That's because the mix of gases used in the panels have been changed to improve longevity. You'll hear the figure '60,000 hours' thrown around; be conservative and figure half that, which is 30,000 hours.
30,000 hours is the equivalent of watching eight hours a day of television, seven days a week for 10 years. I don't watch that much television, but perhaps you do. Assuming you operate yourplasma TV in the 'Normal' or 'Cinema' picture modes and don't play video games on it too often, you should be in fine shape for quite some time.
No, you don't need to recharge the gas in the panel – it can't leak out, and besides, you'd need a laboratory-grade facility to reseal it if it did develop a leak. Yes, you can hang plasma on the wall, but don't put it upside down on the ceiling! Most people prefer to simply place it on a stand, and for the smaller sizes, you don't really need to pay anyone to 'install' it for you – a screwdriver and a couple of strong bodies will do the trick.
Yes, some plasma TVs make a lot of noise at high altitudes. That noise is the mechanical 'buzz' created during the plasma's on-off imaging cycles. At low altitudes, the air pressure is sufficient to keep the glass from vibrating very much. But at high altitudes, air pressure is lower, so the glass vibrates more – and you hear it.
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LCD TVs are expected to last between 50,000 to 60,000 hours, and that's usually the time it takes for the backlight to burn out. However, you should read the fine print in your owner's manual: Those life expectancy numbers are not for full brightness, but only 50% or even 25% of full panel brightness. (Tests have been done to confirm this.)
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