DJing Discussion

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HELP - can hear 2nd track playing faintly in background

ZaneCam 6:35 AM - 22 March, 2017
Hey guys, I'm very new to DJing and i have a problem I cannot figure out for the life of me.
Im using Serato full version trial at the moment and my controller is a Numark Mixdeck quad.

So everything was working perfectly until out of the blue i found myself hearing the 2nd track softly in the background of the first track even when the fader was pushed all the way across. I have tried playing with the "cf assign" buttons and "CF slope" settings but to no avail, I still hear the 2nd song playing in the background.

Any help appreciated, im really stuck on this and cant find anything about it on the net.
thanks,
Zane.
ZaneCam 8:01 AM - 22 March, 2017
nevermind all, took my fader apart and cleaned all the s*** up working perfectly now
Laz219 12:28 AM - 23 March, 2017
Yeah, I was going to say it sounds like 'fader bleed' which can mean a faulty fader- although can just be dirty as seems to be the case here.