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Originally Posted by Semona
I can confirm that LCOS can have burn in. I saw it on a Sony unit that had been running a Sony HD demo loop at a local retailer.
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Not to contradict Gregg, who is clearly The Man when it comes to calibration, but both Sony and JVC state in their manuals that portions of the screen that stay static for extended periods of time can retain an image on their LCoS sets, but that this will quickly fade when other program material is displayed.
In other words the pixels will take longer to return to a neutral state but they will not literally "burn in" the way phosphors will. Hence no permanent burn in. I can see where a set running a demo loop would appear to exhibit the problem, but even after running that loop for days at a time I'd be very surprised if the screen didn't return to normal after at most a couple of hours of running regular programming. Real burn-in does not heal itself this way, and if you don't plan on running static images on your TV for days at a time, I don't see how you'd get into this situation in the first place.
I've had my HD-ILA since last November and have never seen a hint of a problem. Of course I don't leave it sitting on a test pattern for days at a stretch, either. (Actually, I couldn't, since both my DVD players have screen savers. )
I would not consider a fear of burn in a reason for avoiding LCoS as I might with plasma or CRT. If Gregg or anyone else has information to the contrary, I'm prepared to be educated, but I don't see this as being a problem and I love my JVC LCoS.
Regards,