Dmx on Hazer Stopt working

[Tsjah]

Hello,
I use freestyler (4.1.1), and after a lot of reading, i have everything working as i want.
But last weekend, sundenly the Hazer "stopt" reacting on dmx signal.
It is a rather new Eurolite NH30-Mk2, both remote controls from the unit still work.
I tried a lot of things, change cables, change adresses, terminator no terminator, direct to our usb dmx pro 512
Everything worked perfect, Untill that moment (in the middle of a show) it just didnt react any more.
What could this be:
I read somewhere, that changing Hz or Fps could help, i'm gonna trie that later on. (when im there)
But do you think this will help, And what to change to, (it is default on 20fps)
Are there any other things to look for.

Thank you.
Marco

[djSupport]

Check your output window, does it show a dmx value?