Is any one familiar with these drives? I found some torched resistors and diodes on the SEIO1 board. The spindle motor was working.
The resistors I replaced, but the diodes I am not sure what type they are. If I ring them out with an ohm meter, It looks like they are switching on and off. Switching diodes?
The diodes are marked with 3SM 6D, the usual line on one end, and there is a red dot on the lead on the side with the line.

Any help greatly appreciated,
Cutmore