Because of the failure of the  CNS power supply at EX, which was the same age as the power supply at EY, and because of some glitches starting to occur with GPS 1 PPS signal from the CNS at EY, I replaced the power supply for the CNS at EY.

relevant alogs here:

https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80742

https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=80537