Numark Mixtrack Pro (Fixes)

Written: January 02, 2012

Author:  DJ Goldeneye (Youtube Link)

Product: Numark Mixtrack Pro

Before I get into the actual fixes for my Numark Mixtrack Pro, I’d like to give some history. I bought my Mixtrack Pro from an online site in the U.S. (I’m in Canada). I had the hardest time getting my problems resolved because of this even though I was within the warranty period. The agents at Numark pretty much would not answer my emails or return my telephone calls. When I did manage to speak to someone, they said they couldn’t help me because I was in Canada and bought it from the U.S. So I was left with one solution, fixing it myself. Sucks I know...

Troubleshooting Note: 
Before you decide to disassemble your device, test it with a different software (i.e. Traktor, Serato DJ Intro, Virtual DJ) or computer (desktop, laptop, pc or mac). The issue may be the software or the mappings of different applications. If the issue does not change then move on. 

DISCLAIMER:

This repair is done at your own risk and more than likely will void your warranty, I suggest that you get in touch with Numark and have a service technician find a solution for you. If that’s not an option you may use this tutorial as a guideline to fix it yourself. I am not responsible for what you do to your unit as a result of this tutorial. THIS IS JUST FOR SHOW OF WHAT I DID.

This is a relatively easy fix but does require you to solder wires. Please find below the tools I used to make this repair. Please also exercise patience with this repair.

Tools

Phillips screwdriver

Soldering gun/iron (and solder)

Thin strip of wood or plastic

Hot glue gun (optional)
Flat Plastic Washer (other solution below)

Problems with Mixtrack Pro

1. Right Jog Wheel Platter

While using this right jog wheel I noticed inconsistencies when scratching. At some points of rotation it would feel very sticky (too much friction) and it would some time just not spin.

2. Cross Fader Audio Leak

When moving the cross fader to the left deck (Deck A) you would still hear the audio from the right deck (Deck B)

Disassembly

Disconnect USB and audio cables then remove screws from the back of the unit, make sure not to lose any.

On the top side of the unit remove all slider knobs (not buttons) EXCEPT the BROWSE knob. The BROWSE knob can only be removed from inside the unit, when the motherboard is removed.

Turn the unit over and remove the back cover. At this point a wire and a data cable will be attached. You will need to remove both. 

I recommend removing the wire first (from the top side, I found this to be easier), this will give you more room to work. The data cable had been glued (I don’t know why) remove the glue and pull the cable off.

Use a small flat screwdriver or knife to pull back the tabs on the other cables and the cable will slide out easily. If you’re pulling and it will not budge it’s still locked.

Use the solder gun to remove the jog wheel connecting wire from the circuit’s side on both wheels.

The circuit board consists of three different pieces. If you want to fix the right jog wheel or any of the channel faders, volume slider, cross fader or Deck B pitch, the biggest of the three boards should be removed.

Note the arrows on the mother board. These are indications where you replace screws before you put on the back cover after the repair. Be careful and remember to ground yourself (or touch with your bare hand) to a screw with an arrow indication just to remove and static charge you may have developed.

Remove the circuit board and turn it over.

1. Right Jog Wheel Platter

To fix jog wheel “friction” issue, check the underside for a clip that holds the jog wheel in place. Pry the clip off, partially slide the jog wheel out then rotate to see if the shaft is bent or if the jog wheel is rotating unbalanced, check if some kind of particle/dust/debris is stuck inside there. Be careful not to stretch the clip too much it must go back.

If possible get a flat plastic washer to fit. I didn’t so I had to cut a piece of a soda bottle to shape then burn a hole to fit. In my instance it seemed as if the jog wheel rested too low. So the washer pushed it higher so it could rotate seamlessly. Reconnect the clip, hook up the device again and see if it works. At times you might need to restart the software to make sure that everything works fine. (Don’t worry about re-soldering the jog wheel wire, it activates the scratch portion of the wheel. Move the wheel if it still pitch bends its fine.)

2. Cross Fader Audio Leak

If your audio is leaking on one side stick a piece of plastic or wood under the side of the cross fader where the leak is noticed. Just enough to push the circuit board under the fader up just a bit. You don’t want to use a big piece that will damage the circuit or the fader. Use just a small piece, reconnect all the cables hook up your software and see if it’s working as it should. Repeat this step to figure it out.

Suggestion: Check everything again at each stage. 

• Check when nothing is screwed in.
• Check when you replace screws, the circuit board, then re-soldered the wires.
• Check again before you put the back cover on. Replace glued item if possible.
• CHECK ALL THE FUNCTIONS OF THE UNIT.