ncmx3

I have a hot tub with a gecko spa pak. The pumps would make a binding noise and then would some times blow a fuse. I was told that my relays were bad and my pumps were good. So instead of shipping the pak off for repair I purchased a new gecko pak. As soon as I turn the breaker on the pump is back making the same noise. I have no reliable repairmen in the area. Does anyone have any ideas? I don't want to keep buying stuff just to try and see if it works, I would rather fix the issue. Thanks in advance.