[Coco] Disto Super II controller repair

[Robert Gault]

Tim Fadden wrote:
> Hi,
> Is there anyone on the list that could do a repair on a Disto Super II controller?
> Mine started flaking out on me, and finally quit pretty much all together.
> Gets disk read errors, and when trying to do a format, it gets part way, and eventually fails all
> together.  I use it in a repack with a 4in1 controller.  Would really like to get it working, or the
> repack is useless.
>
> Thanks
>
> P.S. I'm retired, and not rich. But am willing to pay for your efforts.
>

Before you decide that the Super II is the problem, you should try to eliminate other issues.
Do you use an MPI? What model Coco are you using? Have you cleaned the contacts connecting the 
controller to Coco or MPI? If possible, have you tried the controller on a second Coco or another 
disk controller on your Coco? Do all disks give this problem or just some disks? Have you checked 
the speed of the drive either with software or the strobe disk in the drive? Do the disks you are 
using turn easily by hand or is there considerable friction within the 5.25" sleeve? Is your cable 
connecting the drive(s) to the controller in good shape?

Questions like the above can point to specific hardware. Disk I/O errors can be caused by many 
things not just the disk controller.

Robert