I was asked for some help on a 747-400 APU generator problem by a new member Taekchang Lee, who is at CVG.
This was a double generator problem as neither would show "AVAIL" with the APU running.
I was wrapped up on another aircraft and I really didn't have time to look at the prints he sent me, much less give him any direction.
He sent me two video's from the aircraft. I'm including them here.
After I had a chance, I did follow up on the problem. The generator issue was corrected. Another one, APU auto-shutdown when air bleed turned on is addressed in the second video. It shows the electrical page with both APU generators showing no volts - no freqs.
I'll get with Lee to see if he can explain the repairs.
