Volume fader moving on its own on DDJ 400

Questions
1

I played a gig on Saturday night and the volume fader was moving up and down on its own within the software.

I pulled out the DDJ 400 power for a reset which usually fixes any bugs, but it still did it.

Could it be the fader needs some cleaning with compressed air?

Or would this be a software issue, however has never happened before.

DDJ 400 drivers are all update.
Djay is up to date along with MAC OS which is 14.6.1

NOTE: Please use the search function above before posting to avoid creating duplicate topics.

  • Device model (e.g. 2020 iPad Air 4th Gen):
  • Version of operating system (e.g. macOS 14.4.1):
  • Version of djay (e.g. 5.1.2):
  • Hardware/controllers used (e.g. Reloop Mixon 8 Pro):

Your question:

2

Stuff to check:

  1. If the Fader needs cleaning - DeoxIT Fader F Series With Shop | CAIG
  2. Is there a fan or aircon blowing directly on the controller? I had similar issues when I did a beach gig during a storm, the wet/salty wind kept messing with the faders until I put up a shield/barrier.
  3. Also try a different cable, it could be a cable/port connection issue.
4

Hi @funkyfresh16,

Could you please confirm whether or not @Michael_Wisniewski’s feedback was useful in your controller issue?

Happily awaiting your reply. Have a good day!

5

I am having the same issue! I’ve taken it apart, cleaned every bit of it. It’s still glitching, no idea what to do or what is the problem.

6

Hi @Jstbecool_b, based on your description, I suspect it is either a faulty fader or interference. Before replacing the fader, I would try using a properly shielded, high quality USB cable with dual ferrites on either end like the ones made by DJ TechTools.