Originally Posted by
Judd
...Partial lighting can be restored by actuation of the Standby Power switch to ON but the PM has to be quick and know instinctively the position of that switch in a darkened environment.
Not a 737 power system expert (more experience with 747 and 767), but wouldn't the Standby Power switch be placed in Auto (or Bat) as part of a normal startup sequence? There isn't an 'On' position to be precise. In Auto, the loss of all AC generators would result in Standby AC and DC loads being supplied by the battery (and inverter) automatically. For hopefully enough time to get the generators sorted out.