That transformer is epoxy resin dipped. Its fine.
and if I recall, I think it was the international version people were having issues in those thread. Jeez, I need to go digging for the threads.
If the transformer was bad, it would blow the fuse in short order. and destroy its accompanying chopper transistor.
Just for comparison, here is a photo in one of my threads of someone else's. Not zoomed in, but you can see the general shape: