Connection problems solved simple ...

After many hours of fruitless searching, why some of input devices (1080p 50 / 60Hz) could not find an image displayed (DVD, Wii, X-Box 360, BluRay 3D; etc.) I have my problem well with the simplest method in the world to 100 % solved:

I have replaced all the HDMI connection cable. New cables with HDMI 2.0 / 1.4a (with me of deleyCON) brought the desired success!
To avoid frustrating and annoying around places, I absolutely recommend the use of HDMI cables of the latest standards for this projector.

The projector itself is beyond reproach. If you want to find something negative, you can only possibly complain about the size or price. This one knows but actually already before buying.

Particularly positive is (in addition to the excellent picture !!!):
+ Super quiet operation in Eco Mode (only when changing the input sources of the fan moves briefly about 4s audible high)
+ Perfect adjustment of the projected area including through Lensshift
+ Very flexible set-up (eg standing with me in 2.4m height on the shelf! Ie without ceiling mount)
+ No rainbow effect as some DLP projectors
+ No true increase in screen-door effect as with many other LCD projectors

After a long search and compare, I have decided to Panasonic PT AT6000E and no regrets.