Oh... Sorry, I forgot about this post... Yeah I didn't find any solution.
I will crack the thing open in the near future and reverse engineere the probe compensation output by myself because I couldn't find any schematic diagram.
I didn't apply any forces to the conector but, because I'm lazy, I used it as signal source for some opamp project. I didn't think that could fry the internal chip that drives the output but after that it never worked again.
Sorry again for abandon this entry but no one responded in a long time so I forgot about it...