His se30 board will read good floppies just fine,,, but every time you try to write or format, it gives a bus error. 800k and 2m disks seem to give a different bus error.

would need the schematics to fix. Cap goo went in an caused some issue some where.

its is a low percentage pattern failure. If one were to figure out what the issue is, the fix could be used in other identical cases like this.

So far this is only the second time i have seen this issue.