Cannot increase current limit above 300mA on Channel 1 of PXI 4130

[CurtisHx]

I have PXI 4130 that had been working fine for over a year, but starting today, I cannot increase the current limit on channel 1 past 300mA in the Soft Front Panel.  The range is set to 2A, but any attempt to increase the current limit past 300mA does not stick.

Channel 0 appears to be functioning fine.  I can set the current limit to 1A and it will handily deliver up to 1 amp.  

[CurtisHx]

Well, I feel really dumb.  It looks like I managed to bump the external power supply loose.  I reseated the aux power input connector, and everything's working again.