DLP burn in?

DLP's can't suffer from burnin. It's a reflective technologie. The image is projected from about 1 million mirrors.


Your ISF doen't know what he's talking about !

Strip him of his certification!!

I didn't realize you could get an ISF certification out of a cracker jack box. But apparently you can (no insult intended to the certified ISF members on board )


No, DLPs are not subject to burn in. Ask they guy what's the mechanism for burn in. Burn in is caused by a prolonged exciting of a material which can decay by something that will cause it to decay (i.e. electrical charge exciting plasma, phosphurs, liquid crystals) and occurs when one area has decayed more than others due to things such as static images, which result in an image being permanently burnt into the viewing area.


DLPs toggel mirrors to reflect light (no decaying of the mirrors) the only thing that would remotely make sense is if the colored material of the color wheel could decay. In which case you'd have a discontinuity of the color across the screen but it wouldn't be burn in. And I've never heard of any such complaints on DLP.


CCourtney

I've been wanting to ask this, and this thread seems a good place to do so.


The other night I fell asleep w/ a DVD playing. The DVD menu played w/ high contrast text and art for several hours. The next day, first thing I saw when turning on my set was a silhouette of the DVD menu. It only displayed for a few seconds before the screen went black then I saw my regular source. After a couple of days, that image seemed to go away.


I realize this is not "burn-in" in the official sense, but what the heck was it?

Quote:
What TV do u have?

HLP5663

Quote:
You may be having a computer problem. The digital data that creates the image on the screen has to be buffered. If the buffer isn't being cleared properly you could get an "old" image "lingering" on the screen. The length of time the original image is on the screen shouldn't make a difference.


Try to find a way to duplicate the same conditions. If you can then you will need to repair or replace your set. Any high contrast image followed by a completely dark screen should do the trick.


I've read of someone else having the same problem. When I tried to duplicate it on my HLP5063 I couldn't see any after image. The logo that is displayed just before Lord of The Rings: The Twin Towers title comes on the screen is a good example.

I've seen the same thing on the European version of the 5085W, whilst going through some DVE test patterns. I also expected that just switching to a 100IRE full field then a 0IRE field would immediately clear it. It didn't. Don't know where this image ghost persists, but it manages to linger somewhere. If it is a frame buffer issue, then turning the set off and back on at the power switch (after powering down via the remote button in the usual way, of course) should completely eliminate it, I'll try that next time I'm playing with calibration.