[SOLVED] Pioneer CDJ 2000 Nexus shows colored dots and doesnt respond

Hi!

I have a little problem with my CDJ 2000 Nexus.

When i turn it on it works for a few minutes and then the display only shows colored dots and restart. If i use it in control mode the play-, cue-, .... buttons work, but the knobs and buttons around the display dont do anything.

I also disconnect the CDJ from all other devices (USB, Network,...), but its still the same problem.

Does anyone know this problem or have any ideas i can try.

Thanks and best regards

Ulrich