Virtually every projector I have used has shifted a bit as well as the focus changing during warm up. Back in the day I keep adjusting one projector every time I turned it on... it would take me an hour to position it and get the focus perfect. Next time I turned it on all over again... until I learned better. Regarding the W7000 I noticed it takes a good hour before the chromatic aberration settles down (stops changing).
With a JVC DLA-RS40 I thought it had perfect alignment after adjusting the panel only to find after an hour I had to readjust and at best it was far from perfect!
But now it's annoying to have to wait an hour for the projector to warm up and then refocus, and even after focusing and resaving the focus after warmup the projector still gets out of focus on a regular basis when I use the lens memory functions.
Displays: JVC RS4910 Projector | 125-inch 2.35:1 Elite Cinetension2 Screen | Panasonic 58V10 Plasma TV
Sources: Yamaha RX-A800 | Microsoft XBOX One | Dish Hopper | Intel i5 Nuc w/ Openelec | Behringer iNuke 3000DSP
Speakers: DIY Fusion-12 Tempest (L/R) | DIY 88-Special (C) | DIY Volt-10 Speakers (Surr L/R) | Subwoofers: MartyCube w/ Stereo Integrity SI-18 X 2
I have the benQ HT series and I adjusted which took a long time so I'm sure it's warmed.
The next day I turned it on noticed the side test line was shifted just into the black instead of perfect. I thought I must have bumped it. So I adjusted it to perfect again, but after it warms was off again. That means I previously had the correct setting while warm. It goes back and forth and doesn't keep "walking" in one direction which I guess is the most important part.
It doesn't seem like it would take a whole lot of movement to venture off the screen just by a test line. like fraction of a mm, with so much plastic I can see it happening. Considering when I adjust the focus etc the thing moves and shakes alot from the screen. I don't really know how to stiffen the spider bracket in the typical universal mount, it's just "springy"
My Baffle wall LCR build: https://www.avsforum.com/forum/155-di...-tpl-150h.html
|Benq W7000 Home Projection System , Jvc Dla Rs40u , Panasonic Ptae8000u Hd Projector|