2018-02-25 21:19 GMT+01:00 <silverdr@wfmh.org.pl>: > >> On 2018-02-25, at 20:31, Francesco Messineo <francesco.messineo@gmail.com> wrote: >> >>> Happens. Rarely but happens. To other types of tightly wound coils too. >> > > I ran a workshop back in the times and had much bigger sample, I guess. Literally hundreds (if not four figure numbers) of those passed through it. I remember this type of failure twice, I reckon. So yes - it is a very rare failure. A fraction of a percent. Few months ago there was a discussion on a local C= user group about a bunch of 1541-s with defective R/W heads that popped up on an auction site (these were part of a bigger batch actually and the guy who dealt with them fixed the remaining ones). One guy said he knew a (now retired) technician, working in a local audio/video equipment manufacturer (Unitra) in the magnetic tape heads department (long time ago...) - and this guy already fixed 10 of the D500 R/W heads when we had this discussion, I guess this number now may be 20+ due to the said bunch of broken 1541-s and some other guys wishing to repair their own units. Process took 3-6 hours per one head (!) Regards, Konrad Message was sent through the cbm-hackers mailing listReceived on 2018-02-26 14:00:03
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