Hey there, it seems the Power supply unit(250W) of teh DC devkit is pure evil.Two devkits have passed from my hands and the PSW failed on both causing problems.(The second one just died,replaced it with the unit from the first one which finally became extremely unstable). Initially i thought the devkit was damaged,but when i hooked it up on my PC's PSW(400W) everything went fine.It seems they are low-quality and very unstable.If you ever spot any weird problems test the Devkit on a Stronger PS unit and if everything goes ok go buy a new and better one...
... yeah,atx form... just bough a new one with 400W,installed and now the devkit operates with no problems...