I have now installed an old Adaptec AHA-2940 Ultra SCSI card with micro-SCSI interface in a Windows XP PC. Windows successfully installed the device driver and sees the Sony drive. If I attempt to read from the drive I get a generic I/O error. So it appears that the drives SCSI interface, positioning and eject circuitry is working but there is maybe a problem in the optical circuitry or the LASER optics. Thanks for all the feedback. Tom Hunter
On Sat, Aug 29, 2020 at 9:58 AM r.stricklin via cctalk < cctalk@classiccmp.org> wrote: > > On Aug 28, 2020, at 3:01 PM, Alan Perry via cctech wrote: > > > My collection is primarily sun4c and sun4m machines. I have been having > problems with the CD drives that I have been acquiring (purchase or rescue) > in the last year or so. 4-5 drives, none worked. It has all been drives in > 411 cases or going into them, no failures with internal drives. Haven’t > investigated why. > > 95% likelihood of faulty miniature electrolytics. > > ok > bear. > > -- > until further notice > >