sorry but now I know it is not the screen.
I have buy a new one and now I have the same problem with this, after I connect it to a spezial screen.
So I think the problem is that screen. I don't know what's the problem with this screen, but now I have on the screen at home green lines and on this screen it was running before.
So may be the spezial screen has a overvoltage or something else.
I have bought a new screen and a new Pi and then it works for maybe two weeks and now I have the same Problem again.
I tried different configurations in the config.txt. At the field applikation I get an picture in 640x480 when i use the hdmi_safe=1 and with config_hdmi_boost >= 8.
At my test application this will not work, their I must use my original config.txt
But the picture is not realy good
Has anybody the same Problem? Do you know what i can do?
I have 5 Pis in the field and they work all fine the oldest since 2 years, so what's wrong with this?