Help guide me to repairing three drives

I’m reaching out because this past week I’ve had a series of unfortunate events and am hoping you all can help guide me to repairing three drives.

It’s a bit of a doozy, I have an unraid server and I was rebuilding a disk and noticed that another disk had error at the end of the rebuild. I believe both issues were cause by intermittent power I believe the power supply was also going out as well. Turned out the outlet the battery backup was plugged into went out and I was unaware the battery had run down all the way while I was replacing all the power cables and I hooked it up and tried to start it a few times. I think this might have fried the boards on three of my drives.

The drives no longer spin up or get recognized when attached to a fresh power supply and new power and data cables.

I have two of these WD80EMAZ (WD80EMAZ WD PCB 006-0A90701)

and one of these WD140EDGZ

Would this be something you all could help me with?

If your HDD can’t spin, you can swap PCB to try.

When you get this PCB, you need to move your original PCB’s BIOS to the replacement PCB. The 8pins (4 pins on each sides) with 25P05VP、25P10VP、25F512、25F1024、25F1024AN、SST25VF512、SST25VF010, etc. are the BIOS.