Why Are My Gridseed Blades Exploding? What Components Are Exploding?
So after asking elsewhere I got half of my question answered. The reason the boards exploded was because the polarity of output was backwards. For some reason Gridseed supply power cables with the typical colours of red for live and white for ground reversed!

My solution was to swap the white and red wires over and I got no more explosions.

Does any one know what components have been damaged? And where would I get replacements from?