> Have you tried heating / cooling the card and changing the supply
> voltage to the limits?

No, I haven't. I can try things like that when it fails. Changing the
card supply is going to mean adding an interface as I think 1.8V
won't register as a High even if PIC Vcc is as low as 3.0V. d/s
says 0.8 * Vcc

I believe I'm within speed spec @ 3V3 (which does tend to be
for the lower speed range) but I'll be double-checking the card's
mode registers to confirm that.

As I mentioned to Christopher though, you'd think a power cycle
would restore the system to another 18+ hours of operation, not
just a few minutes, if this was a signal or synch problem

Joe


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Version: 2015.0.5751 / Virus Database: 4315/9388 - Release Date: 03/26/15

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