Power supply down alert

Receiving power supply1 alert, status shows down. Unfortunately, site support is available in eastern hrs. Is there anything else can be checked remotely, before confirming power supply is down and logging trouble ticket with F5 support.

Sep 11 00:22:01 dallas-2 emerg system_check[9891]: 010d0006:0: Chassis power supply 1 has experienced an issue. Status is as follows: FAN=bad; VINPUT=bad; VOUTPUT=bad

tmsh show sys hardware|grep -iA 5 "Chassis Power Supply Status" Chassis Power Supply Status Index Status 1 down 2 up

Device details:

Platform Name BIG-IP 8900F BIOS Revision OBJ-0331-01 - Build: 90036 Base MAC 0:23:e9:4e:87:0

Version 11.2.0 Build 2805.6 Edition Engineering Hotfix HF7

Also, can only power supply be changed without disturbing the unit?