On the A332 we had the ISIS fail on shut down of both engines on ground, as soon at the NBPT (no break power transfer) kicked in from the APU generator.
Ping went the C/B of the ISIS on the ECAM.
Outstation engineer was unable to repair and dispatched us according to MEL back to base. After getting the gear up on departure, we had another ping on the ECAM, ISIS standby battery C/B popped and so we continued back to to base.
More than enough engineers to receive the aircraft with new parts in hand.
I had never seen this before, but the ISIS was a dead duck in under a second!