Re: Thunderbolts and Lightning

["Too Sense" <SpamLess@YuleNevaNo.com>]

Approaching Thunderstorm? Perhaps heat and / or humidity were factors.
Perhaps the disks themselves were colder than ambient (somehow) and had a
thin layer of condensation on them... Stops VCR's from recording, so that
may be an answer. The disks would have warmed up / dried out by the next
day.

Just guessing.

Cheers
2c

"w_tom" <w_tom1@usa.net> wrote in message 3D21233F.850B56FD@usa.net">news:3D21233F.850B56FD@usa.net...
>   In those early days, thermal changes could easily cause a
> drive to vary.  For example, which floppy head did not read?
> We had seen this even on hard drives.  But in those days, we
> aligned heads to fix this kind of problem.  On some hard
> drives, metal used to hold head would actually change length
> with use and eventually restore to original length of a days
> time.
>
>   There are too many possible reasons for your problem.
> Without actual data, we can only speculate.  Maybe even a
> missing or failed pull-up resistor causing a line to float in
> and out of an acceptable logic state.  Found that to be a
> problem on this monitor.  Replaced the resistor. It now starts
> up every time.  But electricity in the air never was a problem
> with TTL electronics.
>
>
> Simon Williams wrote:
> >
> > Any other transient effects that could be to blame (UFO activity?).
> > Seems odd that an entire batch of disks would be non-functional one
> > day and work fine the next...