Hi
I have a bit of an unusual question.
I had an old (USB 2) external HDD and enclosure powered by a 12V brick. The computer (windows and Mate 18.04) stopped detecting the HDD but worked correctly with a different USB 2 enclosure on the same USB connection (but a different 9V psu). Since it was (very) old I decided to replace the problem unit with a new (USB 3) model. Because I am lazy I left the brick in place and used it to power the new housing/HDD (they are both 12V @ 1500mA and same barrel plug) and gave it a USB 3 connection. Guess what, I had the same problem, the OS's didn’t see the drive so I swapped the 12V brick for the new one and all I working as expected... I can only conclude the brick was causing the problem, unfortunately I discovered the brick issue after I had pulled the old housing apart so the theory can now not be tested with resulting pile of peaces...
A little while later I had identical symptoms from the 2 drives in a SATA connected removable 5.25" bay, I have 2 removable 5.25" SATA units in the desktop (these ones
https://www.amazon.de/gp/product/B007X5 ... UTF8&psc=1). Each unit has a SATA connection per drive and the bays are powered by the PSU. I discovered the two drives in one of the bays weren’t being recognised (by windows and Mate) but the drives did work when swapped into the other bay. I replaced the bay and all is working as expected again.
I am curious, has anyone encountered the sort of power related enclosure failure I experienced with the USB drive and are there any ideas as to why I had what appears to be the same failure type on a SATA bay with a different power supply?
Thanks