Originally Posted by ASIFZED:
“Screen gases dissipating over time
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That's a complete myth, PDP's aren't gas filled.
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brightness reducing
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Yes, but you get exactly the same with LCD, CRT and household flourescent tubes - in all four cases the phosphurs wear out with time. The oldest Plasma's I've seen (that are still working) are still pretty good pictures.
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Granted, you'll still likely get a good number of years viewing out of it but LCDs are expected to last longer.
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I would agree, but not for any of the reasons you're suggesting - simply because Plasma sets are less reliable than LCD - a proven statistic!.
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When I bought my LCD 18m ago, plasmas at the time were quoted as having c.30,000hrs v LCDs of 60,000hrs (or similar) of viewing time - a lot of hours nonetheless.”
All the blurb I've seen suggests similar lifes for Plasma screens and LCD screens, as far as 'wearing out' goes. The sets are more likely to be scrapped long before that due to them going faulty. So far I've scrapped probably half a dozen Plasma sets, due to failure of the panel - but no LCD's so far. I've changed plenty of duff LCD panels (and Plasma panels), but while still under guarantee.
Incidently, we've just had an ex-rental 32 inch Sony LCD come back in, the manufacture date on the back is December 2004. Checking on the service menu it's been running for 8546 hours so far - it's still a great picture though, the customer has merely swapped it for a new one.