NE5d output problem

[tasten_meister]

Hello, I have recently bought a second hand NE5d. My first Nord keyboard.
After playing the instrument a few times with no problems, this morning I have a problem with the main output.
Only the headphone port is working. Ive checked the main settings routing mode is set to stereo. Is there anything else I can check?
I have already used different cables/channels on my mixer and other boards are fine so it isn't a problem with my amplifier/mixer.

After posting this on the Nord FB group I have also restored my NE5 to factory settings. I have no pedals connected and midi local is ON.

I am afraid the output board has failed...
Anybody a clue what I can try at this point?

Best Regards,
Hessel