Mike D. wrote:
It seems to me that there's something wrong with the "new" 740b. My 740 displays a screen that says something like: "iFly power removed, unit will shut down in 15, 14, 13, ..." and shuts the entire unit down if I don't cancel the operation, or reconnect to power. If yours isn't doing that it would seem that whatever is sensing/monitoring the incoming 12/24vdc is not working as intended.
Is it possible that your power supply to the iFly is still supplying some voltage even after everything is "shut down"? Enough to fool the shutdown sensor, but not enough to actually power the device.
This sounds like the most likely culprit.