[Coco] Floppy drive

[Diego Barizo]

I recently bought on e-bay 2 drives for the CoCo.
1 is a FD-501, the other a 502
But the luck that kept me without a floppy for the last 20 years is 
still there.
None of them works
With the 502 controller, the disks won't even spin after a DIR command.
With the 501 I always get an IO ERROR.
I tried with different drives and cables, including a drive that, when 
hooked to my PC, reads the floppies without any problem.
I've also tested them in a CoCo2 and in a 3.
Can anybody give me some hope???

Thanks,
Diego