LATAM B773 complete electrical failure?

[SeenItAll]

Originally Posted by belfrybat

According to the commander, interviewed on TV, power came back after the engines were shut down. Presumably from the APU, on the footage the cabin lights were visible.

I guess we'll know if this was the case if the new procedure from Boeing to address this fault is:

1. Power up APU;
2. Power down both donks;
3. Wait for APU-powered electrical busses to come back on line;
4. Pray that both donks (or at least one) can be restarted.