Yeah, great anecdotal recount, but no real info on how to solve the problem. His approach was trial and error which happen to work. No indication of the current limit used or just what "slow' means in terms of ramping up the voltage(ms, secs, minutes?). It's not clear to me why the voltage needs to be ramped up. If the current is limited that should be adequate to prevent damage and allow the tantalum cap to self heal.