What to do to extract data on HD when PCB fails and cant find a replacement with exact model/Rev. number

If you want to replace the single bay/single drive My Cloud (not My Cloud Home) hard drive, use the forum search feature (magnifying glass icon top right) and search for “unbrick”. There are plenty of discussions on how to replace the single bay My Cloud hard drive with a larger (or smaller) hard drive.

I have used a number of different hard drives in a single bay first generation My Cloud. From 250GB hard drives up to 12GB. I’ve even used 2.5 inch laptop style HDD in the single bay My Cloud enclosure. Some posts I’ve made over the years on using different hard drives in a first gen single bay My Cloud:

Generally most people will use the old Fox_exe user’s directions for unbricking. That person’s files have been archived by someone else to another repository location for access.

Repository: https://wd.hides.su/fox_exe/

First gen directions: https://wd.hides.su/fox_exe/WDMyCloud-Gen1/Replace%20HDD%20-%20English.txt
Original_v03.04.01-230.tar.gz: https://wd.hides.su/fox_exe/WDMyCloud-Gen1/Backups/original_v03.04.01-230.tar.gz
Original_v04.01.02-417.tar.gz: https://wd.hides.su/fox_exe/WDMyCloud-Gen1/Backups/original_v04.01.02-417.tar.gz

Second gen directions: https://wd.hides.su/fox_exe/WDMyCloud-Gen2/_Unbricking_en.txt
usbrecovery.tar.gz: https://wd.hides.su/fox_exe/WDMyCloud-Gen2/usbrecovery.tar.gz
Alternate way second gen files:
uImage-wdrecovery: https://wd.hides.su/fox_exe/WDMyCloud-Gen2/Developing/uImage-wdrecovery
uRamdisk-wdrecovery: https://wd.hides.su/fox_exe/WDMyCloud-Gen2/Developing/uRamdisk-wdrecovery