As H500 said, unfortunately these boards really are crap, and any money spent on them is just throwing it away. They are just a bad design, and suffer from many issues, not the least of which is the peculiar power up/down sequence that can blow the drivers at any time.
You could fix it for now, but you have a fairly good chance one or more will die again. In your case I would save for a G540, even though it's well outside your budget now. It will be far cheaper in the long run.
cheers, Ian
It's rumoured that everytime someone buys a TB6560 based board, an engineer cries!