Changing the PCB rarely works. Here's why. Not only must you match the make/model, but the FIRMWARE version and PCB revision levels.
Many will not find a working drive to steal the PCB from. They'll get another dead drive and hope it works.
Companies like DriveSavers and Ontrack (dot com) offer data salvation services every day.
My hard drive stopped. I replaced the control board and it is now spinning however it can not find track zero. Can any one help me with the next step to make this drive work long enough to duplicate it?
HD Specifications: Western Digital EIDE, Drive (40GB) params: LBA 78125000, model WD400BB-75CAA0, date 05 MAR 2002,DCM DSEANA2CH.