Reply to My solution for s4 mysterious fader problem

So, after waiting to long on an answer from NI about my mysterious fader problems and having already voided my warranty by opening the s4 for re soldering the usb connection. And already buying an s2 as a backup. I was tired of waiting on NI.

So i opened up the s4 again and have tried to get out the print board with the faders on it. Even with al the screws out the board is stuck like they glued it. So not wanting to force anything and ending up breaking the printer board. i Have bought some contact spray to spray the faders.

That worked for two faders, but because all four faders and the crossfader are misbehaving. i decided to go all the way and sprayed some wd 40 in the faders. Now just one was still not ok so after repeating it a few times finally all are smooth and working again. For security i sprayed some more contact spray to dissolve some of the wd 40. And now hoping that it will keep working.

So as the title says this is my solution and i don't now if this will solve it for long. but be sure your warranty is voided when you do this. and i don't know what effect the sprays may have in the long term on the printer boards. but for me it helped and know i have my s2 as back up.

So as final solution with no warranty this did it. I already was convinced that the problem has to do with dirt in the faders. Because first blowing in the fader entrance would solve the problem, but that didn't lasted to long.

For your information i play out with the s4 every weekend on Saturday7 hours and Sunday 6 hours on a beach out in the open with a lot of fine sand dust. After the weekend you can almost write your name on the s4. i used it since november 2010 First batch of S4's.

So it has been used in pretty harsh conditions if this solves the problems for another year than that's not bad.

For the ones who like to know. The only parts that are easily accessible, is the printer board with all the back stuff on it like rca's usb etc'

The fader can be removed really easy'.

And the printer board with headphone jack and mic.

The jogwheel can be removed from the inside. but did'nt see any screws in there that would hold the printer board for the faders and the equalizer. around the jogwheels there are as well two separate printer boards. and when you unscrew the screws it's like the middle board still stuck.

So if anyone has got these printer boards out let me now how. Still got two buttons one fx and deck load A, that are giving problems.