When the crate came back online the GUI reported correct SET values, but the DEMAND values had been lost (no surprise). I had to hit 'enter' in all of the set fields followed by toggling the individual channel on/off buttons for all channels in every slot to bring the HVs back up.
The 1461N card is labeled and is sitting on the table by the BB DAQ computers. To be honest I'm not certain if it is really bad, or if the crate power cycle did the trick.
BTW, I think I have carpal tunnel syndrome from that laptop trackpad --
is that a reportable injury?