Mixer Problems

Hey guys,

I am having problems with my AEM 100i mixer. With the channel on the right side of the mixer, the left side of the audio is quieter than the right. This is for all inputs and all levels of my crossfader, line fader, gain knob, etc. The left channel is balanced fine.

I cleaned the mixer out with compressed air, but have yet to clean the faders. Would that solve the problem? Is there anywhere else I could look? At this point I use the mixer more for its effects unit when producing tracks on my MPC, but I'd like to get it back in working order

Thanks! If this is in the wrong subforum, I apologize in advance.