Hello, I have a WD50EZRZ drive that died when I plugged in a external usb to the PC. I suspect since it spins up but is not seen by the system that there is a fuse or similar blown on the PCB, that I could perhaps replace. Can someone confirm & if true show me the location of the fuses? thanks in advance -John

If it spins up then it’s 99.9% nothing to do with the PCB.

Much more likely to be a firmware and/or media issue.

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Doing some more reading I found the term may be TVS diode? The issue seems to fit, I plugged in a USB device to the PC and the drive in the PC immediately failed.

Its NOT a fuse...

OK. I guess there is nothing to try, the drive is toast.

thanks

Or the USB port is toast...
Try on other PC with known good USB ports.

The OP wrote "I plugged in a USB device to the PC and the drive in the PC immediately failed". I take it to mean that the internal drive inside the PC stopped working after a different external drive was plugged into a USB port. That makes no sense to me.

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A backup a day keeps DR away.

Maybe OP meant the external drive that was plugged into the PC?

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I plugged an new external drive (to back up the PC). The PC made a click, & shutdown.

The PC would then not boot due to an fstab error. I removed the offending line (disc) and the PC booted. I then took the drive out and placed in a USB enclosure and plugged it into the now running system, whereby it will spin, but not be recognized by the PC (there was 2 drives- the OS on a ssd and a data disc- which is the one that failed). I understand it may be toast, but it would be fun and nice to try to recover data if someone has a idea or link they could toss my way.
thanks
JOhn-