Look at the generator output figures. If showing Freq and Volts they are working so the problem is downstream so unlikely the APU will connect. If showing zero and you have tried the reset they are the problem so probably worth trying a start and connection.
Not so sure about the
- Always follow ECAM, QRH procedure
What if you have a multiple birdstrike on T.O. and Eng 1 fails and Eng 2 bursts into flames but still runs. Going to follow ECAM then?