XDJ-RX USB recording multiple 22 seconds noise fragments

Hi,

I recorded my first mix on a USB PenDrive directly connected to the USB2 port of my XDJ-RX.

All went well and I started to playback the WAV file on my computer. On several time stamps of the recording a noisy sound is played during 22 seconds (always 22 seconds).

The sound can be best described as the sound which is played when there is "snow" on you TV.

In the recording of 57 minutes in total, I discovered the noise at 3:50, 17:30, 19:50 and 24:30.

Any idea?