Re: Please help me with info on DLP or LCD Projector
I don't know that DLP units have less potential for problems -- they have different problems.
The big one you need to discover is if you have a problem with DLP.
Single chip units (read: affordable) display the picture with sequential color. If you look at the screen in short enough periods of time, the image is only one color. It is very fast, this flicker rate. Unfortunately, people's eyes also move very fast as they do their little twittering motions to keep the image alive in the brain, and build up the whole image. The question is if you can see the sequential color or not. Different projectors use different flicker rates, so just because you can see it on one, doesn't mean you'll see it on a different make/model.
All else being equal, DLP often have better contrast and brightness specifications per dollar of cost. They also have more moving parts - not just the color wheel that provides the sequential color, but also the individual mirrors on the chip. They do fail, and sometimes you have a chip that has a whole lot of failures in a short period of time. It's bad when that happens, in case you didn't catch that.
But often times they don't fail.
In my experience at home and at work, I've been able to see the color twitter on all single-chip DLP units, although some much less than others. I've also seen one projector in a relatively short period of time develop more than a hundred dead pixels.
I've also watched eight LCD projectors burn themselves out -- the delamination of the optical block, the failure of the polarizers, (all heat-related,) and that wasn't very good, either. (But we run 9+hours per day, every day, which now LCDs aren't warrented for.)
Given my druthers, I'd say, D-ILA (the JVC units,) followed by 3-chip DLP (insanely expensive,) then LCD, before finally single-chip DLP. But then I can see the color twitter. Otherwise, I'd drop the 3-chip DLP and bump single-chip DLP into its place.
Leo
