My alternator recycling intermittently in flight where it goes down and comes back up.
 
 
I suspected, it may be regulator issue and replaced the Regulator B. 
 
After the Regulator B replacement,
- The alternator goes down intermittently and never comes back.
 
- When this happened, I tried to shut down and restart but the fuel pump and Lane switches were not working.
 
- Leave it for 30 minutes or so and start the engine to work again normally.
 
 
 
After the Regulator B replacement, video(On ground):
 
I would appreciate if anyone can help to troubleshoot this issue.