I picked up a non-working Lisa ProFile drive as part of Don's (Antiphrasis) vintage sell-off. I've made some progress with it. After making a cabel, replacing a couple pf PSU capacitors, cleaning contacts and reseating that which could be reseated it now gets through it's self-check on startup. Furthermore it's actually booted four times to reveal MacWorks XL 3.0 on the drive!
However, it not as rosy as it sounds. It's booted 4 times in about 200 tries so that's not a good strike rate. The fact that it's done it even once though gives me hope. For some reason when the computer itself accesses the drive, the stepper motor doesn't want to move (except backwards maybe). It's not getting the data it should. This may be a long term project I think...good for those winter evenings.
I've very pleased with the drive Don. It's in great physical condition, sounds smooth and goes well with my second Lisa 2. Hopefully given time and work, I'll eventually get it working 100%.