IMO, unless you were local, not worth repairing.
Not trying to downgrade your request or say the transformer is not worth anything, but trying to be realistic. It's not a great transformer (50VA), I know the exact component you blew, but by the time you pay shipping, labor, the single part (edit parts since you said both channels are failed full on) that failed is nothing in the big picture of things, you could have purchased a working transformer, maybe twice - maybe three times over.