Okey, now everything is ok.
Finally I`ve changed both transistors, R40 is 0R and R37 is 4k7. Before that I`ve tested the Ig current of U8 it was 0, next I`ve checked the driving of U8 after lifting the gate of U8 leaving it connected only to VCC5. Pulling down the gate of U8 there was 5V at drain, after leaving it open so gate is reaching 5V, the voltage at drain was ... 4,95V. Yesterday it was working but 3,3 to 4,9V ;]. Broken transistor, I`ve resoldered to new one, checked - it works as it should. Next BSS123, broken too! Cannot check the Ig because of the board design, but the voltage with soldered U12 at gate was about 1,7 V today after removing U12 it was 3V (after the divider 3,3 - > 3V) so -> broken bss123 too. Resoldered U12 and output swings from 0 to ideal 5V!
Thank you all guys. I think that this is what I needed.
Best Regards.