DDM4000 problem?

So i just got this used ddm4000
http://www.djtechtools.com/forum/showthread.php?t=24965

But i cant turn on the crossfader, or the mic section or even the sampler section. The only this is is that the led's light up when i turn on the mixer.

Any help?

Delete plz

Can I assume your problem was caused by those sections being enabled for MIDI output?

No need to close the thread if the (assumed) solution can help others..

I think so, i changed the settings back to factory and it worked