Question about Pioneer PureVision Pro-1000HD 50 in. HD-Ready Plasma Television

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A Green Blotchy Area about 9 in oval in the upper part of teh screen

I just noticed today teh appearance of agreen smeary blochy area that is oval shapped in teh upper part of the screen. It only appears when something bright appears in that area. The Plasma screen is only 3+ years old??

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Re: A Green Blotchy Area about 9 in oval in the upper...

Plasma with Burn in within 3 years, I bet. I've seen Week old plasma's with burn in. Plasma technology is not as good as some would make it out to be. Due to the nature of the physics of the device, it is susceptible to something called "Burn-in" When an image of any form is displayed for long periods of time on a Plasma display, they start to literally burn in or wear out that part of the screen faster than a moving picture elsewhere on the screen. ie. If you have a television that is always on one channel and that channel always displays the little logo in the bottom right of the screen (abc, cbs, speed...) that kind of thing, you will eventually actually be able to read that logo even when the plasma tv is turned off. Check your manual or the manufacturer's website for your tv, and somewhere in there, it will refer to a "half-life" of the tv. ie. if your model has a 2000 hr half life, after 2000 hours of viewing, the display can at maximum, put out 1/2 of it's total brightness output. after another 2000 hrs 1/2 again as bright. and eventually it will be so dim that it's unusable. This is a fault with Plasma technology, LCD does not have this issue. CRT used to have this issue, but advances in technology have lowered this risk. So. What you are seeing is remnants of a bright image that was more often shown on that part of the screen than anywhere else on the screen. There is nothing that can be done other than replace the unit (or the screen, but it's easier to change the whole unit). if you've had this unit for 3+ years, you did pretty well. doing the math, if you only use your tv for 2 hours a day, for the 3 years you own it, assuming a 2000 hr half life, you've broken that limit. meaning that you will have parts of your screen that are very likely half as bright as others. Nature of the beast (plasma). This is why they are not as popular as they are advertised. Try an LCD next time.

Posted on Aug 26, 2007

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