regulator

Hi guys my brother accidently changed the regulator from 220 to 110 V and psu gone off. Any way this can be repaired . I had faced such a scenario a long time back say 6 years again did that i blown it. Please help. I am not sure still the same case with mordern psu.

Hello. First, please see attachment. I noticed this from a graphics card. Primarily as a matter of curiosity I'd like to know a) What the purpose, in general, a circuit part like that does (for instance, is it some type of capacitor or current regulator?), b) what could cause it to be damaged...