After prying it open from all sides (it was glued together) we see the circuit board with all the components:
Turning it over we can see the controller IC (Red) and a bridge rectifier(Blue) (datasheets linked below)
The top marking on the bridge rectifier says MB6F which is a 600V (peak) 0.5A bridge rectifier which precedes a transformer. The top marking of the controller chip corresponds to the ACT361 controller IC. The power transistor is the KTC3003HV NPN transistor.