I had a bunch of drives fail and I repaired them all.
They all failed differently, but a very thorough cleaning fixed them all. I found a bunch of amiga floppy repair videos on youtube and cleaned and lubricated as they described and it fixed them all.
Just search for Amiga Floppy Cleaning on youtube and have at it. I watched a few before I even started the project.
I found that a few drives still didn't work after the first cleaning, I went back and did it again and it began working.
One drive the switch that gets pushed down when a drive is inserted need lots of cleaning and work, the others need need the heads cleaned, the rotor drive lubed, and mostly the sensor that detect track zero was dirty. The track zero was the biggest issue for the drives I repaired.
This is one video that was real good:
https://www.youtube.com/watch?v=XESsxQFMxSg
