western digital 500gb WD500GBAAK pcb

I have a western digital 500gb WD500GBAAK and I believe it needs a new pcb. I threw the original board away so I don’t have the number from the back to match a new board. Am I out of luck or is there a chance I can get a new board with using the model number of the hard drive. I know I have changed a board from a hdd that was the same model number and it worked. Any help would be greatly appreciated.

If you don’t have the original PCB, our PCB will not help.