The board looks like a standard footprint that ive seen before.
You can just buy new mosfets (the 8 pin ic's) and resolder them.
If i remember the mosfets are easier to replace than they look, their outputs are paralelled so some of the pins are joined through the circuit board. I think the top 3 pins on the right are usually sharing the same solder pad so the fineish solder pitch isnt really that difficult (check it out first though, try and trace the circuit a bit.)
Also ive seen people piggyback an extra layer of mosfets onto the originals to prevent burning out better (a heat sink would also be beneficial)