E-8709 on cdj400 after using them for 20minutes with Traktor

Hey, So I have a pair of cdj400 as a second setup if I have to be mobile, now I wanted to try a step up from the limited capabilities of the screen of the cdj400 and tried using them with traktor. So I downloaded the CDJ asio drivers such as the demo vesion of Traktor Pro 3. After playing for a while, the left cdj stopped working out of nowhere, everything was shut off except the display, it only showed part of the name of the last song that was played and it was frozen. Nkthing helped so I shut of the cdj and when I turned it back on it showed e-8709 and thats it, I can't do anything. I googled already that this is a communication error between mainboard and screen. I read something about where cdj350 had to have their mainboards replaced to fix this... If thats the case I would be pretty pissed... However I haven't found a thread about the cdj400s having that error so I am hoping that maybe it is something different. Thanks in advance for any help