The average life expectancy for a plasma TV is approx. 30,000 hours. If you watch TV 6 hours a day 7 days a week....which is a lot, that means the life expectency before cells begin to fail is 13-14 years. I don't know about you, but; I would venture to say very few people hang on to a TV for that long. Normally, most will upgrade to a newer set/technology long before the set wears out. In fact, I would not be surprised if the CRT's of old (which still provide the best picture quality on the planet) would last that long without needing some repair(s). In addition many plasma models now offer some form of screen saver to protect the TV from burn in as well. OLED is just around the corner and with much less power consumption, a razor thin screen and superior picture, the myths surrounding conventional plasma TV's will be an after thought....and another reason to upgrade.
Just a thought.
Just a thought.