I assume this supply is a switchmode type.
Don't be surprised if other components are also faulty.-------If the fault was enough to cook the IC,the transformer
(It's officially a choke with extra windings,to be pedantic like the switchmode people are) will probably be faulty too.
It is often quite difficult to determine if a choke is faulty,unless you have a spare you can substitute into circuit.
I found the best way to test them was with an LCR meter,but you really still need access to a good one ,to get an
idea of what the inductance & Q of a good one should be.
If you can't fix it,I'm sure there are a lot of people on this forum who will take it off your hands
& painlessly dispose of it.
VK6ZGO