i have a broken dos, i was also hoping to find another broken one to make a working one. my case and stepper motors are fine but the board is fried. what parts do you want from a dos? i was thinking about sending it to neptune but suspect they will say its water damage and be no help. also i have zero luck finding a working pcb thats not a complete working unit and dont want to make my own driver to run the motors... i might give it another go but if i dont make progress id be open to selling it. the motors are the only thing of value to me atm