Missing Zones/Caddx NX-8e

["Nick" <pn.damico@xxxxxxxxx>]

I have a Caddx NX-8e with two 216 expander cards.  One 216 is fully
populated with no issues.  The other card has half of the zones
populated with the remaining zones jumpered with a resistor.

I added a zone tonight.  The zone was working fine; it is 33.  After a
little while, 33 and 34 are missing when I look at the zone status on
the keypad.  Zone 33 is connected to the device; EOL resistor at the
device.  34 is jumpered with an EOL resistor.

No matter what I do, I cannot get 33 and 34 to show back up.  Even if I
remove everything from these zones, they do not display.  I tried to
use a different common port; still nothing.

Any ideas -- do you think the 216 card is fried?  I did double-check
the dip switch settings, 1 and 2 are on; the remaining are off.

Thank you.