Have three 1771 OAD B output cards that the active light does not come on.
Stand alone rack..no remote racks
Tried new cards...same
Tried new power supply...same
Tried new backplane with original ps...same
Changing powers supply with new backplane...waiting to hear results
Any thought about possible issues? Reading manual points to loss of 5V from power supply???
TIA
Stand alone rack..no remote racks
Tried new cards...same
Tried new power supply...same
Tried new backplane with original ps...same
Changing powers supply with new backplane...waiting to hear results
Any thought about possible issues? Reading manual points to loss of 5V from power supply???
TIA