DDJ SX3 Master Cue Channel Lights Malfunctioning

Shortly after starting a mix, the channels' CUE lights and the MASTER CUE stop lighting up when pressed. If they come back on at all during the mix, it's at a random time; tonight was over 40 minutes later. I do have a black dot by the barcode, it's a permanent marker dot. I have the most recent firmware. 
The problem could extend to the HOT CUE pad lights but I can't be sure, as I read that some tracks don't have all the features built in for the controller to read. 

Please help.