Originally Posted by NNate
Thanks for the response! I must say that's disheartening! But at least I know I'm not the only one who's experienced this. You said that one was the new 2.4 - the others were the 2.8? They all had striping of some kind - whether vertical or horizontal?
I called DaLite today and spoke with a representative. He made it sound like this was something he hadn't heard of before. I even sent over the picture I posted here after getting off the phone, but have yet to hear back about that. He told me they could send me a new screen and even offered to swap for another material (not something I want to do). I definitely can't complain about the support as it's been top-notch from both DaLite and AVS, but the QC problems are another thing entirely. I guess I have to mull over my choices.
Has anyone else experienced this with the 2.4 material?
You could try washing the screen but it's not easy, it takes a bit work to get a streak free finish.
My 2.8 HP has a join at 6ft because it's 160" 16:9 and when it arrived it was immediately obvious that the top 1ft piece was brighter looking than the bottom 6ft piece. I couldn't send it back because of my location so I just put up with it, fortunately it wasn't that noticeable during normal viewing so I didn't worry too much.
Recently however a large bug mark turned up on the bottom half and had to use a mulitpurpose cleaner to get it off as it was very stubborn. I tried water and then soapy water which was recommended but neither worked. What I noticed later when watching a movie was that the section I cleaned was now brighter then the rest of the screen.
Of course the only solution now was to clean the whole thing from top to bottom with the same mulitpurpose cleaner and hope that it would all look uniform, fortunately after many goes it did. I no longer have a bright patch where the bug crap was and the top and bottom pieces are identical looking in gain and brightness.
My conclusion is that the bottom section of the screen and possibly to a lesser extent to top piece aswell had some kind of residue on it which reduced the gain of the surface. Cleaning it off increased gain but it also improved colour aswell and it reduced screen texture. I now find the screen texture on my High Power to be much harder to see and this has had a positive effect on the image. I think in general the picture is better.
The striping and smudges that some people report I suspect is that same residue although I'm not really sure.
So the way I cleaned the screen was to basically wet it from top to bottom in one go with the multipurpose cleaner(I used Ajax spray n wipe 5 in 1), then let it sit for a few mintues and then wipe down with a damp cloth, repeating this a second time. After the second go I had to wipe it down about 10 times with a bucket of warm tap water and a cloth to remove all of the soapy residue left by the multipurpose cleaner. If you don't do this you will have visible streaks. It's a pain to do and it took me awhile but I did eventually get a streak free screen.
There may be a better cleaner for this type of job, something less soapy perhaps but it was the only stuff I had that actually cleaned the screen without scrubbing and harming the screen fabric. You have to be careful you don't use a chemical that is too harsh or scrub the screen too hard as it could damage the facbric obviously. If you are going to try this you might want to use a test piece first to be safe.