Damn. Replacing that burned 5V regulator didn't revive the stepper driver.

Damn.
Replacing that burned 5V regulator didn’t revive the stepper driver.
(Tried to fix it first before waiting for some chinese cargo ship to reach Europe.)
Now let’s see if I get a replacement or order a new one.

Ok, China sends a replacement. I don’t even have to send back the old one.