Why can't I repair a hard drive?

Randy Brandon, I can tell you that the only fixes I have tried is the replacement of the PCB. Anything else would require the opening of the drive and expose it do dust etc. This could lead to further failure, platter damage etc. So unless you have a "clean room" and the right tools, I would not expect a repair that will last. If you have any important data on your drive, try any of the commercial services. Hope this helps, good luck.