SORRY ! Was my mistake I should have read the Manual (RTFM). My Apology!
There where 2 Cables attached in the Set, I connected both to the board.
Now I read in the setup manual that only 1 is used according to the Amp used. In my case, the smaller one.
Now it works perfectly. But I realized a mistake in the Manual
The picture says
- For Amp 2.9 V3/Pro V3 Pro v3
- For Mini V3
The text says
- Connect to Mini V3
2.Connect to Pro V3 / Amp 2.0 v3
Should be the other way round?