Here's an exerpt from a site that also refers to 60,000 hours of life for a plasma TV:
"Now, there are varying degrees of phosphor ignition along the way (the same way a CRT fades). Dissipation begins the moment you turn the set on. After 1000 hours of usage a plasma monitor should measure around 96% of its original brightness, which is barely noticeable to the naked eye. At 15,000 to 20,000 hours the monitor should measure around 80% brightness, or to state is technically, 80% of the original phosphors (gases) are being ignited".
My TV is on about 10 hours/day (mainly CNBC with the ticker constantly flowing along the bottom of the screen, so I'm concerned about burn-in too despite the improvements in this area). At this rate my plasma would be at 80% of brightness/phosphors somewhere around 4 to 5 years. I'm skeptical of the 60,000 hours figure in the real world as well, but it really doesn't matter if the TV has already lost 20% of its output after the first 5 years.
For many (and probably most) this might not be a problem, but for me it is enough to keep me out of the plasma realm (for now) despite the fact that I find the picture superior to LCD.
"Now, there are varying degrees of phosphor ignition along the way (the same way a CRT fades). Dissipation begins the moment you turn the set on. After 1000 hours of usage a plasma monitor should measure around 96% of its original brightness, which is barely noticeable to the naked eye. At 15,000 to 20,000 hours the monitor should measure around 80% brightness, or to state is technically, 80% of the original phosphors (gases) are being ignited".
My TV is on about 10 hours/day (mainly CNBC with the ticker constantly flowing along the bottom of the screen, so I'm concerned about burn-in too despite the improvements in this area). At this rate my plasma would be at 80% of brightness/phosphors somewhere around 4 to 5 years. I'm skeptical of the 60,000 hours figure in the real world as well, but it really doesn't matter if the TV has already lost 20% of its output after the first 5 years.
For many (and probably most) this might not be a problem, but for me it is enough to keep me out of the plasma realm (for now) despite the fact that I find the picture superior to LCD.