Reply to CDJ-850 volume issue

Hey guys

So every few weeks/months one of both CDJ's has an immense volume drop. I've checked the mixer, tried other cables, etc etc. The problem definitly lies with the CDJ. It happens at random & dissapears at random but it stays even when I reset the CDJ.

Any help?

EDIT: After doing some more testing it appear that my 2nd channel strip from my DJM 350 is the issue.