DDJRR qui s eteint en plein mix

 Right in the mix all of a sudden the controller s is extinguished and 1 acute and shrill whistling out of HP !!!!! I have put out: dj rekorbox my mac then disconnect the ddjRR and back on everything and c go again !!! fortunately it was not in No 1 dancing evening !!! the operation was to last 3 minutes and yet forced to redo my settings with the settings of the FX, micro, cross fader .... etc !!! thank you contact me soon to understand why this horrible and unacceptable bug in the evenings !!! eric greetings