KNC Titan cube not starting
I recently bought titan on eBay. 5 cubes. One cube tho got damaged Durring transport. Heatsink lose (screw holding it got lose) which i think is common. I managed to put it back with some DIY. Was hashing fine. Then unplugged it and now its dead and on top of it psu shuts down when connected to that cube. Any idea why? How to fix it?