I have found it.
It was a undervoltage error, it can be adjusted with setup, I dod set it to 180 volts because it was on 280 volts. I have setup also the currents, rpm etc, watch out
for these because it is a HF spindle set the currents the right way and let is spin up in 5 seconds.
https://youtu.be/OUTqBJS3z68
The joints where oke, it was quite good made, caps glue,ed and such.
The sound is a little loud that is because of the camera who mic can not be adjusted, you hear the loud cooling fan also.
sounds as a flying jet, but have set now also carrier frequency to 8 Khz, that helps a lot..
Thanks guys with thinking with me.