I think this may have happened during transit. Looks like the package may have been dropped or hit, and the weight of the transformer has cracked its retainers and the pertinax board.
Anyway, it looks like a quite simple power supply, and anyone half capable in electronics should be able to repair it, maybe replacing part of the circuit board with something new (pay attention to electrical safety!). If the case is OK, the power supply should look and work just like original.