AVS Special Member
Join Date: Aug 2000
Location: Southern California, USA
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I'm not sure if this is obvioius, or has been reported in this thread or another, but I had an amazing discovery today regarding my HP screen.
I've had the screen for about 3 1/2 years, and recently I noticed that there seemed to be some streaky lighter patches on it in certain scenes, particularly with blue sky or other very white scenes. I was worrying that the screen was deteriorating, but after further investigation, the screen appeared to have a very, very light coating of dust, which you could not really see with the naked eye under normal light. The streaks or patches seemed to be where the dust was lighter or perhaps had been rubbed off or something.
I contacted Da-Lite regarding how to clean a screen that had collected some dust, and they told me to use distilled water with a clean white cloth and to dry with a clean white cloth. So my wife and I cleaned it carefully today, and the streaks and patches are now gone. The amazing discovery is that the brightness of the screen and the perceived contrast increased noticeably. The screen is in a dedicated home theater room, typically used only a couple of times a week, and is not a basement or is not particularly dusty. Thus, I don't consider the environment to be particularly unusual. If anything, it might be less prone to dust than a lot of other rooms. But the effect of cleaning the screen of what little dust had collected on the screen was pretty astounding to me.
It kind of makes sense that a higher gain screen would be impacted more by dust than a lower gain screen. I mean, if the screen is relfecting light to a great extent, it makes sense (to me anyway) that even a little dust couuld really impact the amount of light reflected. In any event, whatever the technical explanation might be, this made it clear to me that regular dusting or cleaning of a high power screen is a good idea. I intend to clean mine once a year or so, if necessary.
I apologize if this has already been disussed before, but I just wanted to pass it along in case anyone else has a HP screen that has collected a little dust on it. Again, the difference was quite striking.