I got a Duo 230 in unknown state. When I powered it on, it worked, but it was unstable. I then examined the capacitors on the board and found that every one of them was leaking, so I replaced them. The Duo turned then on and it worked for a half an hour or so, but when I tried to power it on second time, it failed.

It is dead, and something clicks in the DC-DC area of the board for a few seconds, then it stops. It looks that the board is drawing a lot of current, since as I plug in the charger, it sparks a bit. Also the LT1171CQ regulator IC next to capacitors gets very hot after a minute, so hot that it started to melt flux that was present from the factory...

I checked all the my recap work and even did it again with another batch of capacitors, but the issue remains. As far as my knowledge goes, I believe that there must be something wrong with that IC or the something that controls the IC... but I don't have a clue.