Strange problem i just got with my decks / mixer

[jag4life]

I am running 4 cdjs and a 4 channel mixer into traktor. Heres my problem channels 2,3,4 all work fine but channel 1 sound only comes out the right speaker and not the left but it does when i switch it from stereo to mono. Any ideas how to fix it ?

[jag4life]

its fine i fixed it