DJM900Nexus channel 2 suddenely cut out

Hi, I'm having a problem with my DJM900nexus where during my gig I will suddenely notice in my headphones, when cueing channel 2, the left ear will be staticy and very low, but channel 1, 3 and 4 all work normally. Also noticed sound coming out of PA will be much lower when its out putting from channel 2. If I try to switch the master to Mono mode, only the right master level shows any output and the left shows nothing at all, which normally in mono, both bars shold mirror each other. The only way for me to fix it was to reboot the DJM.

First time I noticed it was during a gig, I thought maybe it was just my imagination. After trying it at home the DJM was acting normal. Second time it happened twice during a gig. The only way for me to fix the problem was to restart the DJM. I ended up having to cue up the CDJ, let the current song play out to a dead stop and restart the DJM while I shout to the crowd since Mic wont work while the DJM is rebooting.

Has anyone else had issues like this at all?