Some resources that offer instructions for repairing hard drives are ExtremeTech.com, PCMag.com and CNET.com, according to the respective websites. The websites offer instructions for different hard drive repair and replacement options.
ExtremeTech.com offers a step-by-step guide with the different available options for retrieving data from a damaged hard drive. Some options include replacing the PCB or repairing burned contacts. If these options do not solve the issue, the site suggests consulting a professional.
PCMag.com is another tech resource that offers information on hard drives. The article offers information for partitioning hard drives and checking the drives. CNET.com offers instructions on replacing hard drives with an SSD.