On 2/8/18 4:03 PM, Ian via cctalk wrote: >
> I don’t have a lot of background here- what goes wrong with them? > I have been told a common failure mode was for them to open. Maybe something bad happens between the platter and head over time (metal-metal corrosion)? And who knows what sort of nastyness happens if the two are in contact for extended periods of time in the presence of humidity.