737 NG Electrical system - normal ops.
Had a second hand message recently that we have sim trainers suggesting that the overhead panel R/H rotary (display) switch should be selected to inverter as an early way of spotting some obscure failure.
The precise nature of this failure could not be explained by this middleman.
Just wondered if this rings true with anyone...or what peoples logic /thoughts are on where these two rotary switches are best positioned.
Thanks in advance.