killed keling 5056d driver

I had been having trouble with my wiring connection on this driver and in hast I wired my power wires backwards. Now I get the green/red led lights flashing, and I contacted keling and they do not do any repairs. Has anyone ever attempted to repair one? I have a feeling I just need to shell out another $90 for another, but if it can be repaired, I am willing to try as I have nothing to loose.

thanks to anyone who can help.