I tried to reseat the ROMs but no change. I have tried with both system 2.0 and 1.0. The floppy drive is working with another 512k.
The mouse is working with my defect 512K , but when I put in a floppy disk the reader starts spinning and continues to spin. The steppermotor is not moving.
I have checked the voltage(+5,+12,-12 volt) to the drive and its OK.
Is it possible to measure the signals from the logic board to the floppy drive and locate the problem???