i have a WS-C2960-24TC-L
with IOS c2960-lanbasek9-mz.150-2.SE4
or IOS c2960-lanbasek9-mz.122-55.SE7
when switch running on dual power RPS+internal
#sh env all
FAN is OK
SYSTEM TEMPERATURE is OK
POWER is OK
RPS is AVAILABLE
when i unplug the RPS cord
#sh env all
FAN is OK
SYSTEM TEMPERATURE is OK
POWER is OK
RPS is NOT PRESENT
when i unplug the power cord from internal power supply
#sh env all
FAN is OK
SYSTEM TEMPERATURE is OK
POWER is OK
RPS is AVAILABLE
on the old model in 2950 it worked fine, it showed POWER is FAIL. I tried three different 2960 switch and is not work.
How do I know that has a failure in the internal power supply?
